hi su ann! you're someone with tremendous potential to succeed in life and obviously you haven't yet fulfilled your potential cause of your age, the fact that you're still in school, experience and etc. that's probably why you're feeling an inherent sadness. all of these circumstances are evolving day by day and one day (soon!) they will converge at a precise point where you will feel completely happy and at ease with yourself. from that point onwards, it will be a breeze, trust me. cheers