I agree with you, watching everyone else doing new skills and having fun is very hard. You wonder "Why me?", "Why now?", "Why does it hurt?", "Why does it take so long to heal?" it's very difficult. I do know where you're coming from, I'm still recovering from my surgery which was May 6. They went in and tightened my ligaments in my ankle and took the screw out of my elbow (from a previous injury). Not sure if your ankle surgery was the same, but it is a long road of recovery. I started back in the gym May 20 basically working abs and arms. After completing physical therapy the doctor released me August 18. I began doing front tumbling on tumble track immediately, then started doing roundoffs and simple jumps on floor September 1. I just did my first roundoff bhs tuck on spring floor this week(since surgery) and got my front hs vault almost back to where it was before surgery. Like I said it is a long recovery and most pounding is still pretty painful for me, but as long as you stick to your conditioning and listen to your doctor you will be back stronger than ever. There were also two verses that helped me through my recovery process, they just kinda put things back into perspective for me when things weren't going so great. Jeremiah 29:11 is great when you are asking those "Why me" questions & Isaiah 40:30-31 was great when I was conditioning by myself and just felt like giving up. Good luck and I hope everything works out for you in your recovery!