First you will have to define happiness and before loving something to do, you have to love yourself. To love oneself means to accept that you are not a perfect being, but behind the imperfections must lie a great ounce of courage to be able to discover ways on how to improve and how to recover from our mistakes.

Happiness is about contentment too. If you keep questioning life like it has never done you any good, you will never be able to find genuine happiness. Sometimes, the most sought after prizes in life doesn't always go to the fastest, the strongest, the bravest or not even the best.

Define your own happiness, try your best and accept the obstacles in your life with humility and without complaining. The happiness lies in accepting the unexpected with grace and to learn to enjoy even in adversity. Let yourself not be a victim of circumstances. Let peer pressure not affect you. Self belief and contentment are important. Clarity of thoughts in exactly what you are and what you want is equally important. There is no readymade recipe for happiness except for some general rules, few of those I outlined above. Every individual is the master of own happiness and own destiny and one has to look inside, not outside to find happiness.

Easier said than done ;) It is a lifelong struggle :)

I think that Its not easy to find the happiness in yourself, but from other side i think that isn't possible to find it elsewhere. And we skip very sublime moment that action may not always bring us happiness bit without any action happiness is impossible. So just fear and not enough courage can stop as and of course destiny for those who believe in it :)

Finance, of course.

Lack of financial support is the most common reason as to why people can't do what they want to do. 

I think that it's true that we are our own worst enemy, but sometime Society may stop us from 

doing what you love or maybe in some cultures.