My biggest challenge was deciding what I wanted my diet to look like long term. This surgery gives us the metabolism reset that we need, but we have to find a healthy diet that we can live with for life. This isn't easy. Second was finding an exercise routine that I would look forward to doing 5-6 days a week. I found the solution to both so I feel like I am in a good place to be successful in maintaining my loss.
Only time will tell though.
My biggest success was getting off all of my medications for type 2 diabetes, and a close second was getting into the best shape I have ever been in by starting running.