Self sabotage

I just want to be able to stop self sabotaging and stop making bad choices. I want to be able to look after myself. I know things to do that in theory (and probably in practice) would alleviate some depression and associated symptoms. So WHY can't I bring myself to so any of them?!?!?! Not even big things! Things like showering, cleaning my teeth, making my bed, getting out of the house, eating well, drinking water. Things that come so naturally to other people 😫😭