<human>: Can you succinctly summarize the text in 1-3 sentences?

Long story short, fat kid in middle school shrank in high school (~5 days a week martial arts) to become a bit of a heartthrob. FF to college and I stop working out and put on a few (160-170). People make cracks because I was so skinny (150 after Freshman year) but nothing big. Cut to graduation and I stay in my college town (with no job prospects) to be with a girl who ends up cheating on me half a dozen times with mutual friends. I give up on life in an existential breakdown and skyrocket to 200 lbs, officially obese.

Almost a year and a half after graduation I've kicked her succubi ass to the curb, landed a sweet job with "a" Cruise Lines and have rediscovered some of the fire and passion I used to pride myself on. I've rejected all the excuses I used to make for myself and moved from being an unapologetic drunk who regularly killed a fifth in an evening while smoking tons of weed to a teetotaler. 
Instead of spending all day every day languishing in despair on my back I've started walking 10 miles every day I am able and instead of eating a large pizza and then some for lunch I'm down to ~500 calories a day, mostly potatoes and fruit juice.
<bot>: Turning my life around. I'm putting this here so any time I start to shift back I can come here and remind myself of my commitment.