What is happiness?

What, then, is this happiness, and how does one achieve happiness?!
Happiness is the constant feeling of elation, tranquility, generosity and joy. This feeling of contentment comes as a result of always having three states: one’s self being in a good state, one’s life being good, and expecting that one’s final abode will be good.
With regards to these three states, man starts by asking questions about the self. These questions grow larger as he grows older, and he does not find happiness until he answers the questions which come to his mind:
• Who owns this universe and controls all its affairs?
• Who created me and created this universe around me?
• Who am I? Where do I come from? Why was I created?
Where will my destiny take me?
what is the happiness and what is path to happiness?