What happiness Is!
Happiness is something you give yourself because you believe you deserve it, so you bring it on to yourself through believing in yourself by getting out of life what you want!
You become happy when you've fulfilled a desire, desire is something which needs attention. A desire can be something as simple as wanting a good piece of advice, or as simple as wanting a good cup of coffee. The main idea is to fulfill your desire, this will contribute to your happiness. To get what you want is to fulfill your desire.
Your desire may be to go out and meet someone new for your own personal gratification, it's vitally important to knock all obstacles preventing you from fulfilling your desire.
Just do it!
Action is the key word to fulfilling a desire, so when you think of something you really want, than go for it, don't let obstacles mar your way. Obstacles are meant to be knocked down to defeated, otherwise, they'll hold you back from happiness.
Happiness comes from getting what you want from life without hurting anyone to achieve it, but rather asking for divine guidance through prayer. To pray is a rewarding experience even if you don't believe in the almighty Christ. It brings happiness because you are directly dealing with your qualms, or interests by talking about them, and facing them through prayer. You are dealing with it, and by dealing with what's on your mind will contribute to your happiness. Essentially, you will be happier just the fact you're verbalizing it. So prayer is good for anyone even non-believers!