MYour twenties are going to be rough. If you had no confidence in high school, don’t expect your twenties to get any better. In fact, they’ll probably be worse, as now you’re an “adult” and are expected to do things on your own. I have some advice to men in their twenties.
No man is an island, so to be obsessed and passionate about something that can improve your life is great, but take it to the point where it takes over your life, you end up miserable and worn out. This is not where you want to be.
One of the great and amazing things that happens when you change your diet, stop drinking, start working out, and really start a lifestyle of self-improvement is that you begin to notice a new you. You look in the mirror and you see, physically, a different person.