The great thing about college is you can go back whenever it suits you. Maybe not to the same school but somewhere. Hell my mom's back in college and she's 55 years old. I dropped out of my first college when I was 18 after just six weeks - I overdosed on otc meds and spent a week in the hospital. It just wasn't the right time for me. I went back at 20 after stabilizing and made it through the whole four years.

This year I started school for my special Ed certification but had to drop out after one class. I just couldn't handle it. I have no plans to go back right now. But I know I can when things are more stable for me.

In short don't feel too bad about having to withdraw if that's what you choose to do.