Why do I feel bad when someone does something nice for me, specially if they buy me gifts?

Perhaps you feel like you don't deserve being treated kindly, don't deserve gestures of love and friendship. That's wholly wrong, you are a valuable individual and deserve admiration and respect. At times you might feel bad about yourself and question why anyone would even like you or want to be your friend, but it's important to remember that you often, your self-perception is warped and there are many good things about you, you might not see. Start accepting yourself and accept the love others give you.

It is okay to not be used to accepting gifts. Some people see it as a form of debt or favour since they didn't earn it. Important thing to understand is that the other person is doing it out of thankfulness and not to make you seem any less of a person.

Because it creates an imbalance of power. I don't feel bad per say, I just don't want to end up feeling indebted to certain people.

You are letting yourself believe, for some reason, that you're not worthy of other people's attention or praise. You should save a minute to reflect about the good qualities you have and realize you are important and be thankful when you receive a gift or a compliment, after all you deserve this and so much more. Be aware of the good you do for others and for yourself, learn to love yourself at any cost. Try not to think about others actions as mandatory acts, people often do go things to you because they care, and this is a really important thing. I hope this helps.

You may have problems with self esteem and confidence or you might feel that you don't deserve it . This is a completely solvable problem and you have to remember that somebody always loves you no matter what! Self esteem problems can be a result of abuse or and symptom of anxiety . There is a possibility that Feeling like you don't deserve something can also be because of guilt that you didn't put enough effort into the relationship as the other person . If that's the case a a true heartfelt talk with the person could reveal true feelings of both and you can work towards what you want

Some people feel bad when others do nice things for them because they don't feel worthy. Some people feel like they are undeserving of kindness. You deserve good things to happen to you, so next time someone says something nice to you or buys you something, say thanks and smile because you know you deserve it.

Specially then when someone sacrifice for gifting me. I feel bad that they avoided something just to do some nice to me.

While I don't know for certain, from personal experience, it could be possibly because you devalue yourself as a person. You may not feel deserving of the gift.

You are probably more used to giving than receiving and you are most definitely not alone. Learn to just say 'thank-you' and accept it. When you don't accept something that someone is trying to give you, sometimes they feel offended and sometimes you are denying them a blessing.

Perhaps you may feel undeserving of kindness, or that you're not good enough; while the truth is that we can have people or community in our lives that appreciate us for who we are and ultimately do want to see us do well.