your usefulness (understanding your potentials and inner values)

Stop having that mentality of blaming yourself at any little mistakes you make.
Stop letting people discriminate you. Never allow any one to treat you the way they do. your energy, confidence and attitude is the currency that others will transact with.
understand your potentials know your value never accept being treated in a way less than you deserve. you deserve more, you deserve to be treated the way you treat others. change yourself and remember don't change out of the wrong reasons to appease someone or in hopes that they will like you more. if they judge you for who you are now they aren't your fit.
never accept defeat because defeat is one of the reasons why many talents, values are not actualize. chase after your dreams always encourage yourself even when no one does that, always see yourself as a winner. believe in yourself don't give people the room to see you as somebody that don't know what he is doing. be proud of yourself even when you know you didn't do well. bring out the value in you let people know what you are good at.
never hide yourself to the extent of not knowing what to do. prove them wrong by bringing out your gift (value) to the things you love doing.
remember the only person that knows what you are capable of doing is you. have a nice day