What are you afraid of if you say "No" to people? Here are some of the things my clients have told me regarding their fear of saying no:
"I'm afraid of hurting their feelings. Then they will get angry at me and I will feel like a bad person."
"I'm afraid of ending up with no friends. People will reject me if I say no."
"I'm afraid that my partner will get angry and withdraw his love."
However, when you are afraid to stand up for yourself and say "no" when saying "no" is what is in your highest good, then you might put walls around yourself to avoid having to say "No."
For example, Janice keeps herself 50 pounds overweight because it makes her feel safe from men approaching her for sex. A beautiful woman who was abused as a child, she never learned that it is her responsibility to take care of her own feelings and safety, rather than take responsibility for others' feelings. She is so afraid of hurting a man's feelings by saying "no," that she would rather attempt to protect herself by being overweight than have to face saying "no."
Ron is terrified of being taken advantage of. He believes that if he is open hearted, he will be vulnerable to being used and taken advantage of by others. Because he doesn't want to face his fears of rejection should he say "no" to his family, his friends, his co-workers, or even to a persistent salesperson, he keeps himself safe by being closed, hard and aloof. He believes that by being unapproachable, he is safe from being taken advantage of. However, he then ends up experiencing the very rejection he is afraid of, because people are put off by his aloofness. Not only that, but keeping himself closed and hard cuts him off from connection and fun with others. All this can change for Ron if he learns to take responsibility for himself by saying "no" when this is what is in his highest good.
Gayle finds herself going along with want others want her to do, and saying the things that she thinks others want to hear, because she is so afraid of others' anger at her. But giving herself up feels awful to her, so after a while, she gets angry and shuts down as a way to protect herself from losing herself. She spends all this energy giving herself up, and then getting angry and shuts down, to avoid having to say "no."
As a child, did you experience the heartbreak of rejection or even of abuse if you said "no" to a parent, a sibling, a friend or relative? Did you learn that either going along with what someone wanted, having a temper tantrum, or shutting down and numbing out were ways to avoid the feeling of heartbreak at not being able to say no?