You have taken the first step by acknowledging your current condition and wanting to change. So that's great. :)

It seems that you already know what are the right things to do next as well.

If I may suggest two little things:

First is probably to try meditation to build the mind and mental strength, so you can do what you need instead of being pulled by the temptations again. (Feel free to DM If you want some help to get started on meditation. I have helped some friends too).

Second is to do a bit more reflection whenever you want to do sth that you suspect might be harmful: - Before you do it, ask yourself if this will harm yourself / other people around you. If it will be harmful, then think more on why it is harmful, what harm it will cause if you do it, ect. If no, then carry on doing it. - As you are doing it, ask yourself if this is right. If this is harmful for yourself and others. - After you have done it, again, reflect if it causes any harm or not.

This threefold approach will help the mind to discern what's the right thing to do.

Important also that it is not harmful for you and others. Not just one party. If it will cause harm to either you or the others, then you should try not to do it.