well, you're telling the truth when you say that people have to choose the important things in live, that's a tricky question, because it goes right with your best interest at that moment.
Maybe, today your biggest interest is making money, so, you organize all your life around that goal.
Or maybe your biggest interest is lost 5 pounds, so you should organize your life in order to obtain that result.
and so on...it's important to clarify your interest and think about what do you really want. Then, go with everything to reach that.