Is my life hopeless now because...?

I screwed up in high school, not because I hated it or was a sleeze bag, but due to personal issues and health problems, which caused me to even get lazy at times. Most of my friends are going off to universities, and this makes me cringe...I graduated HS with standard diploma. I'm 18. What is next step in life? How can I move forward toward the real world and make something out of me?