Birthday blues

Its my birthday tomorow , I have felt depressed on and off for an week leading up to it , I havent been very productive this week. Its not so much because im getting older , Its because around these times , I get really disappointed with not being exact were I want to be in my life. Ive been going through this every year since I were 15. I know I have an great life , but I havent been feeling like that this week. Its just took me so long to just to get to were I am today. I feel like I have wasted my life.