A big part of it is getting dressed as if you have some place to be, even if you don't.
Putting on clothes rather than a bathrobe or just undies makes it easier to get out of the house and makes you more likely to actually do something rather than stew in your own filth.
many studies show just merely regular physical activity vastly improve mood, just lift shit, take walks and enjoy the bounty of nature
Putting on clothes rather than a bathrobe or just undies makes it easier to get out of the house and makes you more likely to actually do something rather than stew in your own filth.