No one dies on the table. So, you can ease your mind about not waking up.
For me, there was never that much pain. They give you wonderful drugs that take care of that. The hardest parts were:
1. Not showering
2. Having the chest tubes and having to call the nurse to go to the bathroom
3. After a few days, you're not on as much pain killers, and therefore, more aware and therefore, you get VERY bored in the small room.
4. Needing patience. It takes time to be able to run. Stand first. Then walk. Then after awhile, you'll run.
5. The "hardest" part is the waiting pre TX, and the dry runs. Dry runs are stunningly hard emotionally. Most of us had one or more dry runs and each one is devastating.