My dad taught me some basic principle of life like 1)Do ur job(service) with upright head. Don't give up ur self-respect just for bread. Animals also get bread.2)Never cry for the enviroment of life. Either change the enviroment or change the life style. This was taught by behavior. He is now 83. He has never complaint about his life. He is with me since 18 yrs. My mother also expired before 3 yrs, but he has no complaint about life.