Being happy is a state of mind, and even those who struggle in their daily lives can find things to be happy about if they only look hard enough. Part of being happy is being content with what you have, instead of striving to have more than others or wishing for incredible wealth or fame. Happiness in life can be caused when you are satisfied with your achievements, or when you help those less fortunate. Romantic relationships and close friendships are also reasons for being happy.
Some people will never be happy for you because they can't be happy for themselves pray for them.