Happiness is the great blessing of god. everybody is not the happiest person. Happiness can be increased by loving with humanity. Always be a human being. don't be silly. happines is always giving an essence of life. happines tells you the meaning of life
happiness means to live for others to work for others to do help for others. to help for poor.
you should keep happy yourself by doing noble deeds you may not be happy if you do wrong with someone. this all depends on you how to be happy and how to keep happy to others.
that we are not happy its is the biggest question I ever heard. people are too much busy in their life they don't know the meaning of happines we should have to tell them how to be happy
please be good and noble and humble with others.
I hope this will help you a lot to sort out your problems