A smile is just a simple gesture but it can let people close to you,it will let people feel warm,feel happy. When you are satisfied with what you have you will also be happy.Having a dinner with the whole family you will also feel happy.Doing things you like you will also be happy.A "Thankyou" from people who you helped will let your heart feel warm,let you feel happy. It is very easy to be happy,a simple thing,a simple word,if it is what you like then you will feel happy.Happy is not that hard to claim if you don't demand or require too much