1. Come clean. Public statement admitting guilt and apologizing to the public at large, providing whatever proof possible for any statements that were false or blown out of proportion while admitting to the truth.
2. Personal apologies and restitution to any victims by loaning money from the parents. This may be done years down the line if I suspect that contacting them now would do more harm than good. The ultimate goal is to do no harm; even an apology can be selfish.
3. Do community service, volunteering, and make donations. Become humble and appreciative of the life I have. Do it so much and so well that my name gets mentioned in local newspapers, on organizations' web pages, etc. Not just because it will push more recent and more relevant and positive results to the top of Google, but because I can only fix myself by working on myself.
4. Lots of therapy, as well as possible medical treatment (fungal infections). Self-reflection, meditation, exercise, etc.
5. Apologizing to my parents for dragging them down with me and pouring my whole into becoming a more productive and less shameful individual.
6. Devoting myself to healthy and fulfilling habits while making conscientious decisions about my path: dropping out of TTU, finding low wage work anywhere that would take me and investing myself into it, establishing financial independence without excess (drugs, alcohol, porn, etc.). Eventually finding a career path that resonates with me and pursuing training or education if needed, with full disclosure about my past issues and the steps I've taken to overcome them.
7. Staying off the fucking internet and removing myself from any negative influences (people, places, things).
8. In general trying to put my best foot forward in everything and being nothing less than a shining beacon of positivity to those around me. Finding joy in the success of others. Admitting fault for my mistakes and feeling pride only for humanitarian achievements.
This is the only way IMO, and this is just the start. There are many more things that can be done to "cleanse" a person and put them on the right path.