im trying to survive here so help or keep running

i dont know guys... im something i just dont know what.
i suffer from PTSD (post tramatic stress disorder) and depression
whenever i get into these moods i just blame the depression
what else is there to do when i can find nothing to be depressed about and yet i still am?
ive only had one flash back this week and headaches but i can handle it right?

i really need to find a purpose