Would it be feasible for you to get a buy a few sessions with a personal trainer? They could evaluate your weaknesses and then set you up on a customized program based on your needs. They can also make sure you're doing the exercises with proper form so you avoid injury in the future.
"You may have a fresh start any moment you choose, for this thing that we call "failure" is not the falling down but the staying down." Mary Pickford
"No matter how slow you go, you are still lapping everybody on the couch."