What do i do on days where i feel rage might get the better of me?

You're obviously not getting enough exercise. Get out and walk it off. Al;so try thinking about those even less fortunate than yourself: those born crippled or deformed, those who live with mental and physical abuse every day of their lives, those who are terminally ill. Give thanks for the few blessing you do have because even those could be taken away if you don't appreciate them. Do something for others and stop listing your sorrows all the time.