I'm fairly new to sobriety and echo what others have posted.
The healing power of time
Working on the steps
Prayer
I still get incredibly sad waves of guilt (because of my past behaviour, not because I'm an alcoholic), particularly when I think about the pain I caused my wife & loved ones. While I can't take back the pain, I can keep them safe & try to give them some happiness & peace by staying sober, working on my sobriety, and doing my best to be a good husband, dad, relative & friend. When I feel at my worst, I do get on my knees & pray - and I always feel better, more accepting of my flawed but human self.