You seem to have low self-esteem which is quite common depending on past experiences and/or due to the way one perceive things.
You can surely bounce back and move ahead, consult a Counsellor who will be in a better position to work with you and empower to boost your self-esteem and confidence.
Once you are able to do this, everything you do will be amazingly successful and the so called people who said you are a kind of problem will say you are a star.
But you need to work on yourself immediately.
Next Steps
Consult a Counsellor in your city and seek further help.