*Part* of your problem is an error in philosophy (see below). As many make this kind of error there are probably other (organic) causes for your current mood.
Try to stay active, do sports and try to eat healthy. Do whatever your mood does "tell" you not to do (e.g. take part in social life, do...
I think it's partly genetic (similar to the IQ) and partly the same effect as with the male/female ratio in children. If everyone else had female children then a male would be quite popular ;) If everyone had let's say ES* children then someone with IN* would be quite successful in life as well...