Five Simple Rules For Happiness:
1. Free your heart from hatred.
2. Free your mind from worries.
3. Live simply.
4. Give more.
5. Expect less. 
Happiness is a state of mind that cannot be put in words but has to be experienced. Life can be made full of joy and happiness if it is understood the right way. As sorrow becomes halved when shared with others, happiness becomes doubled when you share it with your loved ones. Happiness cannot be curtailed or confined to one single concept.
There are various things that cause happiness depending upon the mentality of the person. If millions of dollars can cause happiness to a reason, the beautiful bloom of rose or the smile of a small baby can bring unbound happiness to another. The following quotes give an idea of the vast diversity of things in life that are responsible for bringing happiness. But in a nutshell, happiness can be brought about by change of mind or attitude or alteration in the perspective but it is one thing in life that cannot be bought by money.