Most people have heard of IQ, the measure of intelligence. But when it comes to living a happy and successful life, IQ is only part of the story. Emotional intelligence (EQ) is just as important, if not more. EQ is our ability to understand our own feelings, manage them, and recognize the emotions of others.

When EQ is low, the effects often go unnoticed at first. You may still get through daily tasks, meet deadlines, or maintain surface-level connections. But slowly, cracks begin to show. Conflicts in relationships feel harder to solve. Work feels more stressful than it should. Even your health can take a hit.

Research shows that people with higher EQ tend to have stronger relationships, perform better at work, and report better mental health compared to those with lower EQ (Schutte et al., 2007; Martins, Ramalho, & Morin, 2010). On the other hand, low EQ is linked to stress, poor coping, and difficulty adjusting in social and work situations (Lopes et al., 2006).

What is Emotional Intelligence?

Emotional intelligence, often called EQ, is the ability to notice, understand, and manage emotions, both your own and other people’s. It’s not about being “emotional” all the time. Instead, it’s about being aware of feelings and using that awareness to guide your actions in a healthy way.

Psychologist Daniel Goleman (1995) described EQ as having five main parts:

• Self-awareness – noticing your feelings as they come up.
• Self-regulation – staying calm and choosing how to respond.
• Motivation – staying driven even when challenges arise.
• Empathy – understanding and caring about others’ feelings.
• Social skills – building healthy relationships and communicating well.

Someone with high EQ might pause and take a deep breath before responding in an argument. Someone with low EQ might lash out without realizing how their words hurt others.

Research shows that EQ is not just “soft skills.” It’s strongly linked to outcomes in real life. For example, higher EQ is associated with better job performance, stronger leadership, and greater well-being (Mayer, Roberts, & Barsade, 2008; Joseph & Newman, 2010).

In simple words: EQ is the “people side” of intelligence. Without it, even the smartest person can struggle to connect, collaborate, and cope.

How Does Low EQ Affect Relationships?

Relationships, whether with a partner, family, or friends, depend on emotional connection. Low EQ makes this difficult. When someone struggles to recognize or express emotions, misunderstandings become common. A simple disagreement can quickly turn into a bigger fight because neither side feels truly heard.

One major challenge is poor communication. People with low EQ often misread others’ tone or body language. They may dismiss emotions or respond in ways that feel cold or defensive. Over time, this creates distance and frustration.

Another hidden cost is lack of empathy. Empathy is what helps us put ourselves in another person’s shoes. Without it, a partner might feel invisible or unsupported. Research shows that empathy is one of the strongest predictors of relationship satisfaction and closeness (Ciarrochi, Chan, & Caputi, 2000).

Low EQ also leads to emotional disconnection. Instead of dealing with feelings directly, people may shut down, avoid difficult talks, or bottle things up. This can leave loved ones feeling lonely, even while being in a relationship. Studies have found that emotional intelligence strongly predicts both the quality and stability of close relationships (Brackett, Warner, & Bosco, 2005).

In short, when EQ is low, relationships don’t just “struggle.” They quietly erode. People might still live together, work together, or see each other daily but the bond becomes weaker with time.

How Does Low EQ Affect the Workplace?

Work is not just about skills and knowledge, it’s also about how we interact with people. Low EQ often shows up in ways that quietly damage teamwork and career growth.

One of the biggest issues is teamwork struggles. People with low EQ may interrupt, dismiss ideas, or get defensive during feedback. This can create tension and make collaboration harder. Research has found that employees with higher emotional intelligence build stronger relationships with coworkers and contribute more effectively to teams (Jordan, Ashkanasy, Härtel, & Hooper, 2002).

Another cost is career stagnation. Promotions and leadership roles often depend on emotional skills, like conflict resolution, persuasion, and adaptability. A person who lacks these skills may be technically excellent but overlooked for leadership positions. A meta-analysis showed that EQ predicts job performance beyond cognitive ability and personality (O’Boyle, Humphrey, Pollack, Hawver, & Story, 2011).

Low EQ can also fuel stress and burnout at work. When emotions are poorly managed, frustration spreads across the team. Negative moods can lower morale and increase turnover. In fact, research suggests that leaders with low EQ create more stressful environments, while emotionally intelligent leaders foster engagement and motivation (George, 2000).

In other words, at work, low EQ doesn’t just hold back one person, it ripples through the entire team and organization.

How Does Low EQ Affect Mental and Physical Health?

Low EQ doesn’t just affect how we relate to others, it also affects how we relate to ourselves. When emotions aren’t managed well, stress builds up. Instead of processing feelings, people may bottle them up, lash out, or turn to unhealthy coping habits.

One major cost is chronic stress. Without the ability to regulate emotions, small challenges can feel overwhelming. Over time, constant stress increases the risk of anxiety, depression, and even burnout. Studies show that people with higher emotional intelligence are better at managing stress and report fewer mental health problems (Schutte et al., 2007).

The effects are not only mental but also physical. Emotional suppression and poor regulation have been linked to higher blood pressure, heart disease, and weakened immunity (Gross & Levenson, 1997; Martins, Ramalho, & Morin, 2010). In other words, ignoring emotions doesn’t make them disappear, it often shows up in the body.

Another hidden impact is low resilience. Life always brings setbacks, but people with low EQ struggle to bounce back. They may get stuck in negative thoughts, withdraw from others, or give up easily. Research suggests that emotional intelligence helps people adapt to challenges more effectively and recover faster from stress (Armstrong, Galligan, & Critchley, 2011).

Why Do Some People Have Low EQ?

If emotional intelligence is so important, why do many people find it hard? The reasons often go back to how we were raised and the environments we grew up in.

For some, it begins in childhood. If emotions weren’t talked about at home, or if expressing feelings was punished or ignored, children never learned how to recognize or manage them. Instead, they may grow up believing emotions are “bad” or “a sign of weakness.” Research shows that parental emotional awareness and responsiveness strongly influence a child’s future EQ (Mikolajczak, Petrides, & Hurry, 2009).

Cultural and social norms also play a role. In many societies, boys are told not to cry or show vulnerability. Similarly, people may be expected to hide their struggles to “save face.” These patterns can make it harder to develop empathy or regulate emotions later in life.

Trauma and past experiences can also limit EQ. When someone grows up in an unsafe or unpredictable environment, their brain may focus more on survival than emotional awareness. Studies have found that early trauma is linked to difficulties in emotional regulation and empathy (Cloitre et al., 2005).

Finally, personality differences matter too. Some people are naturally more sensitive to emotions, while others may find it harder to read social cues. The good news is that EQ is not fixed. No matter the reason behind the struggle, it can be strengthened with awareness and practice.

Can EQ be Improved?

The good news is that emotional intelligence is not set in stone. Unlike IQ, which stays fairly stable, EQ can grow with awareness and practice. Think of it as a muscle, the more you train it, the stronger it becomes.

One of the first steps is building self-awareness. Simple practices like journaling or pausing to name what you’re feeling can make a big difference. Research shows that people who label their emotions are better able to manage them and respond in healthier ways (Lieberman et al., 2007).

Another way is through self-regulation techniques. Something as small as taking a breath before reacting, or walking away to cool down, helps shift from automatic reactions to thoughtful responses. Mindfulness practices have been found to significantly improve emotional regulation and EQ (Kotsou, Nelis, Grégoire, & Mikolajczak, 2011).

Practicing empathy is equally important. This can start with active listening, focusing on what someone is saying without preparing your reply in your head. Over time, this skill helps deepen connections and reduce conflict.

Seeking feedback from trusted people is also powerful. Others can often see our blind spots better than we can. Research suggests that coaching and training programs focused on EQ lead to measurable improvements in both personal and professional life (Nelis et al., 2009).

The key is to remember that EQ is a skill, not a personality trait. With patience, practice, and sometimes professional support, anyone can strengthen it.

Conclusion

Low EQ may not always be obvious, but its effects run deep. It can quietly strain relationships, create roadblocks at work, and even harm mental and physical health. The hidden costs add up, not because people don’t care, but because they often don’t realize what’s missing.

The hopeful part is that emotional intelligence is not fixed. With small steps, like noticing emotions, pausing before reacting, or practicing empathy, you can begin to strengthen it. Research shows that even modest improvements in EQ can lead to better well-being, healthier connections, and more success at work.

In the end, EQ is not about being perfect with emotions. It’s about being human in a way that connects you with yourself and with others. And that’s a skill worth building.