I am so relieved you got help! YES, it is possible to reverse ANYTHING! You're only seeing the surface of people's lives in these forums, but I can attest that I have changed miserable circumstances and feelings in my life that, like you, I literally never believed possible.
However, there are paths to follow that actually work and paths that don't. If you really want to change and really want to become happy, which you absolutely deserve, you must dedicate your life to finding a practice/method that actually enables you to do that. If you try something out and it doesn't work, discard it. But always remember that if something fails it doesn't mean ALL things will fail. Never ever give up!
AlexL
Happiness in this World