If you're reading this and you're in high school then let me tell you something: Those aren't the best days of your life.
My high school days were hellish for me. But I wouldn't have it any other way. They gave me a healthy chip on my shoulder. Sure, it's negative, it's ugly, and whatever. But it motivated me to work harder to succeed in life.
Since I was of the nerd class in high school, far down in the food chain and made to feel unworthy, there's a certain satisfaction at being successful in life. Success as in happiness, wealth, home life, future prospects, health, etc. But it didn't come easily. It took a lot of hard work over a long period of time. And I'm not ashamed to admit that part of the motivation to do that work was to right the injustices (real and imagined) of those earlier years.
So next time someone says that those are the best years of your life, pity them. They're not.