One step back

Go read a book, go for a walk! Whatever you do make sure you know you are worthy of being free from PMO and that your past doesn't need to define your future. Find something productive to do with your time, we all know that having nothing to do can lead us to a bad place. Get busy buddy! Make a game plan for yourself so you don't make the same mistake twice.

 

Not a step back! https://en.wikipedia.org/wiki/Order_No._227

I had the same problem like you just like 4-5 weeks ago. I doubted myself and always thought about it. I regretted my mistakes so much, that it was not normal anymore. I never exprienced such a thing in my life. It lasted for 5 days! Then, I realized that my life is worth way more then that. It stopped, and I really enjoyed my life, so much, that I simply did not care about my mistakes in the past. We have to let the past go, and focus on the present.

I would suggest forcing yourself do to activities, like sports, reading books, or another stuff. You need some distraction to get your thoughts organized - I would also suggest watching a movie or playing a bit of a game.

How I said, I regretted my life for 4-5 days, but then it just went away, and I felt great like never before ! You will make it - I truly believe in your success!