I was a thief in college and a bully in high school. How do I get over my consuming guilt?
Can you tell me more about your guilt?
I have so many things that I don't want anyone to know about my past, and I never know who I can tell these things to. It just feels like there are no right answers here.
Both stealing and bullying are terrible things, but it sounds like you're ready to move on from that, which is why you're so worried about people knowing that it happened. Everyone is capable of growth and changing as they get older, and you need to embrace that. Don't be afraid of your past and instead worry about how you can be a good person now.
I know that I need to let go of my past, but all the things that I've done seems to be following me around. Once my past has caught up with me, I think it will be the end of my life.
Perhaps instead of worrying about your past catching up to you, admit to your wrong-doings.  It would be considered a fresh start instead an ending and would help clear your conscience.