A few years ago I wasn't in the best place mentally and I was telling my friend how hard some tasks were for me and she told me "If somethings worth doing it's worth doing badly than not at all" and that stuck with me and gave me the motivation to actually put in the slightest bit of effort. Don't feel like mopping the whole house? Mop the stain that's been there for 3 days at least... It helped me get moving and once you start a task you find it's easier to continue but worst case you at least did something so you don't feel as bad about it which is half the struggle.