Agha Kousar said this quote
“ Do whatever you want, even spend time with any one or help any one. Don't keep any expectation that the person you are helping today he will give u same manner tomorrow. This expectation is one of the big obstacle between you and your success. Be independent, limited and love yourself. Enhance your personality instead of wasting time and energy by planning to take revenge. Because best revenge for your enemies is not their defeat but they will get defeat by your success ”