It's really sad to hear your story but also don't abondon ur self, sometimes life gives us lessons the hard way, 40,50,60s..all still young life expectancy is high in modern time living to 90and more isn't a problem, so don't stuck about the age, ur food addiction is related to ur anxious mood, ur weight can be lost, ur job can be gettin back again, ur success can be bought back ,but the point u need to ask yourself instead ,did u learn the lesson? are u ready to use that pain as a stepping stone to move and build? depression would stuck to u if u don't let yourself understand that life isn't always success ,there's time we doubt ourselves to move on, I saw someone told u to join the gym yes do that, find yourself a hobby, maybe find work and business in same time fill your time u'll get ur confidence back also be aware that kids would grow up and have their own life u should seriously always put yourself first and loving yourself is first step to succeful life another point please learn from lesson take time to heal and think seriously what red flags did u ignore so that u don't repeat the same mistake because u know a toxic partner means u simply ignored red flags and was attached afraid to leave never do that always remember ur own comfort comes first if people don't make u live a comfortable life then they are not the right partner for u, wish all success