Your goal should be interesting to you

Pursue goals for your own satisfaction, not out of guilt or social pressure. Often people feel they have to do something "professional" like being a doctor or lawyer. When people feel they have no choice in the goals they pursue, they're not going to be satisfied. Goals that derive from fear, guilt or social pressure probably won't make you happier, even if you attain them. Your goal should be interesting and enjoyable to you, or if not, it should be something you believe in strongly. Why are you pursuing that goal if you don't find it interesting or enjoyable or not something you believe in? You can tell when someone is passionate about what he is doing -- there is a certain glow of happiness and contentment that flows from him. Happiness isn't a secret -- find something you love and do it. [Source]