Working on and in your recovery can help deal with that stuff.
Leaving sit or trying to ignore it may work for a while, and it may hit you head on and help get you back out there using again.
The past is over and done now and we can't change it. And the old habit of dwelling on it is hard to break.
What we can do is work on trying not to repeat our past, and move forward and grow. And replace those old bad habits with new ones.
It is tough in the beginning, but it does get easier over time, with some work on our part.
I'm glad your here and I hope you continue to read and post, your not alone.