Not all jobs are suitable for this kind of working. If your work requires close and frequent synchronous (same place, same time) cooperation with colleagues, then remote working may introduce significant delay unless it can all be achieved through technology.
The very latest thinking is that those who score high on self-control lead lives characterised by effective habits and routines, rather than deploying that much active resistance. Better self-control seems to involve avoiding temptations, rather than resisting them.
This isn't going to be a hugely depressing account of what it's like to have an eating disorder, or a request for pity and understanding, but I hope it will be an insight in to something people who haven't suffered from it rarely understand fully.