i don't know why. i've been feeling down lately. one time, i'll be smiling, laughing & having fun. & then the next minute, i see myself being in a confused state of mind & would just rather being alone. i know i have my friends whom i can talk to but, no words could explain why. sometimes, i got really frustrated with myself. kept on stressing in things that are just a waste of time. tell me, what the hell is happening?