so, my whole life i've been pretty happy, but i've always fallen into these mini depressions that last for 3 to 5 days usually. and in these depressions i see no point in living, i don't want to be around anyone, and i can't sleep or eat or really do anything. now, i don't know if i'm manic depressive maybe, or if i'm actually just depressed and the times i feel "happy" i'm just repressing. it just seems that i get over things too quickly as well. especiallly anger at other people. so any thoughts?