New work boots hurt for a couple of weeks before they fit. So does a new version of you. Keep wearing it.

Discomfort is not proof that something is wrong for you. A stiff boot and a new routine work the same way: the first week is awkward, and that awkwardness is the wearing in, not a warning. People quit in that window and decide they are not the kind of person who does that. Two weeks of mild friction is an ordinary price for a change that lasts.

Pick one new thing and commit to fourteen days rather than to forever. Write the start date down so you can tell early discomfort from a genuine mismatch. Expect day three to be the worst of it, and decide at the end.