Take it one step at a time and focus on only the things you can change. Put everything else on the back burner — you need to work through your feelings about those things, but work on what you can improve first. It sounds like your disability getting terminated might be the most pressing thing right now. Work with your case manager on what you can do to ensure that it is continued.
Definitely talk with your doctor in great detail about what you shared here. Some experiences you described are not necessarily symptoms of ADHD.
Life is complicated for everyone, just in different ways. You can do better than you feel today — just reach out to those in your life and your support system and ask for help.
ADDitude Community Moderator, Parenting ADHD Trainer & Author, Mom to teen w/ ADHD, LDs, and autism