To “keep my head in the game,” I frequently went back to why I wanted the surgery. Personally, when my kids wanted me to play with them, I would be winded after 10 minutes. They deserve a parent who needs to be healthier so I could be there for them. I am their example and if I fail at everything else in life, I refused to fail them.
It could help your headspace to frame it that way - doing the surgery for a different cause besides the overarching “lose weight.” This path is very much a physical, emotional, and mental challenge. Best of luck to you!