<human>: Well, this isn't the first time I've said I was gonna turn my life around and build healthy habits and get into the best shape of my life. But dammit, it'll be the last time I say that. I dipped into my savings and ordered a nice set of adjustable dumbbells, I've gotten back into tennis, and I'm joining an intramural ice hockey team in September. On top of that, I'm ready to start eating healthy and cut the crap out of my diet. 

I'm 20 years old, male, 5'10", and I weigh 263 lbs. Despite weighing 263 lbs, I actually don't feel that bad. I have no problem playing street hockey or tennis for extended periods of time, and I don't feel exhausted. But, I know that I'm playing a very dangerous game by being okay with being fat, obese even. And I don't want to spend the prime years of my life feeling bad about myself or worrying about easily avoidable health problems down the road. 

My goal weight is 175 lbs, and I want to reach that by the time I turn 21 in mid-March of next year. I know that goal might be too aggressive, so I've decided that I'll be okay with reaching my goal weight one year from today, as long as I've built healthy habits and am sticking to my exercise regiment. After all, it isn't a race. 

So yeah, here goes nothing!

Condense the text into a few key points
<bot>: I'm a 20 year-old male who is wicked fat and tired of it. I'm gonna get into the best shape of my life by the time I turn 21, and that's really all there is to it.