Assertiveness: What It Is and How to Be More Assertive

What assertiveness is

Have you ever said "yes" when you wanted to say no, stayed quiet when someone crossed a boundary, or rehearsed a sentence only to lose your nerve when the moment came? Or the opposite — suppressed your feelings for weeks and then finally exploded? These experiences are usually about assertiveness.

Assertiveness is the ability to communicate your thoughts, feelings, needs and boundaries clearly and respectfully, while also respecting the rights of other people. The American Psychological Association defines it as an adaptive communication style in which people express their feelings and needs directly while maintaining respect for others.[1] In other words, assertiveness is not about getting your way — it is about being honest without attacking others or silencing yourself.

Assertive vs passive vs aggressive

The NHS describes assertiveness as communicating what we feel and need calmly and openly, positioned between passive and aggressive styles of communication.[3]

• Passive: suppresses your needs to avoid disagreement — "your needs matter more than mine."
• Assertive: expresses needs directly and respectfully — "my needs matter, and so do yours."
• Aggressive: pushes your needs onto others through hostility or pressure — "my needs matter more than yours."
• Passive-aggressive: expresses resentment indirectly rather than saying what you need.

Imagine a colleague asks you to finish an extra project by tomorrow when you are already overloaded. An assertive reply might be: "I can't realistically complete this by tomorrow alongside my current work. I can take it up by Friday, or we can discuss which existing task to deprioritise." Notice it states what is possible, what is not, and an alternative — without an apology for having a limit.

What assertiveness is not

It is not the same as confidence. You can feel highly competent and still struggle to tell a manager your workload is unreasonable; you can also feel nervous and still act assertively ("I'm uncomfortable having this conversation, but I still need to talk about what happened"). Sometimes the behaviour comes first and confidence follows.

It is not aggression. The APA specifically distinguishes assertiveness from aggression and describes it as direct communication that maintains respect for others.[1] The goal is to communicate, not to win.

It is not selfishness. There is a difference between "I don't care what happens to you" and "I care about you, but I can't do this." You can love someone and still have boundaries.

Why it can be so difficult

Knowing the right sentence is not the same as being able to say it. Several patterns can get in the way: fear of rejection or conflict, feeling responsible for keeping everyone happy, low self-worth, family environments where disagreement felt unsafe, social anxiety, people-pleasing, and perfectionism about finding the "perfect" words. These reinforce one another. A common loop is the people-pleasing–resentment cycle: you agree to something you don't want, feel resentful, keep accommodating, and eventually withdraw or blow up — then conclude you are "bad at relationships," when the real problem is that your needs were never communicated clearly.

How to be assertive without being aggressive

Assertiveness is learned through practice. A few evidence-informed steps:

• Identify what you actually want — not what will make the other person happy, but your genuine need ("I need more notice before being asked to work late").
• Say no without over-explaining. "I'm not able to take this on right now" is a complete sentence. You can add a reason, but you don't owe a ten-minute defence.
• Use "I" statements. "I feel unheard when I'm interrupted" lands differently from "you never listen." APA guidance recommends "I"/"me" statements and attention to tone, posture and eye contact.[2]
• Be specific about the behaviour and the boundary: "I won't continue the conversation if I'm being shouted at."
• Give yourself time. "Let me think about it and get back to you" creates a pause between the request and your answer.
• Start small — a restaurant preference, a minor request — and expect some discomfort. Unfamiliar behaviour can feel "rude" when it is simply direct.
• Tolerate other people's disappointment. You can communicate respectfully and still not control how someone reacts.

If someone keeps pushing ("come on, just this once"), the broken-record approach helps: calmly repeat your position — "I understand, but I can't do it" — rather than being drawn into an argument about whether you are entitled to your boundary.

A simple assertiveness formula

A useful structure is Observation → Feeling or need → Request or boundary. For example: "When meetings regularly run over, I find it hard to manage the rest of my day. I'd like us to finish by 5 PM whenever possible." The exact wording matters less than the principle: clear, respectful, specific and honest. Importantly, assertiveness does not guarantee agreement, though it can improve the chances of being understood.[2]

Assertiveness, culture and NRIs

Assertiveness does not look identical in every culture. In many Indian families and workplaces, people navigate strong expectations around respect for elders, family obligations, hierarchy and harmony. That does not make anyone "unassertive" — a person's communication style develops within a particular social world. A culturally sensitive approach avoids simplistic advice like "just put yourself first," and instead helps you communicate your needs within the relationships and values that matter to you. For Indians living abroad, this can mean constantly switching styles between colleagues, parents and community — the aim is flexibility, not deciding one culture communicates "correctly."

When to consider therapy

Assertiveness can be learned. A systematic review of assertiveness-communication training found that such programmes generally improved assertive communication, while noting variation between studies.[4] A randomised controlled trial of an eight-week internet-based CBT intervention for assertiveness found improvements in adaptive assertiveness compared with a wait-list, maintained at one-year follow-up, alongside reductions in social anxiety.[5]

If assertiveness feels impossible because of intense fear, shame or social anxiety, memorising phrases may not be enough — there may be deeper beliefs ("if I disappoint someone, they'll abandon me") worth exploring. For social anxiety specifically, NICE recommends individual CBT developed for social anxiety, including behavioural experiments and graduated exposure.[6] Consider speaking with a professional if difficulty being assertive is significantly affecting your relationships, work, studies or self-esteem. Assertiveness is not about becoming "tough" — it is learning that your needs, feelings and boundaries are legitimate too.

Related reading: social anxiety disorder, romantic attachment styles, individual therapy, and psychological assessment.