I started an ADN program at 18. Graduated at 20. Now 21 with a year experience. I plan on going for my masters within a few years. It's hard! It will push you to your limit and not prepare you at all for the real world. BUT, you can do it! You have to have a passion and take school seriously. I was one of the few "babies" to make it, because I didn't go party and ignore the seriousness of the program. I will say, it's so worth it! I get to do my dream job at such a young age. So my advice: take it serious, be confident in your abilities, and never give up! Good luck!