Hey Stewy....
Not sure how long sober you are but one thing to remember is its OK to feel angry and down. If you're getting stuck there for extended periods that may need to be addressed differently.. But being human means having emotions. Being sober means confronting the upwelling of many emotions that have been long ignored or repressed or numbed.
It's OK to feel these things and sometimes, just giving yourself space and permission and compassion can go a long way toward moving in a positive direction.