Hello lizable: I don't really have any useful suggestions for you. I'm an older person now. And I no longer concern myself with healthy habits, motivation, etc. (It's one of the few benefits of being old from my perspective.) But I noticed no one had replied to your post. So I thought I would.

The two things that come to my mind, regarding your post, are first that it's difficult enough to succeed at changing one habit, let alone multiple habits. So I think it would probably be important to just pick one to work on at a time. The other thing that occurs to me is that it's really difficult to make substantive changes alone. One needs others around them who are working on achieving similar goals. (I think that's probably one of the reasons weight-loss programs can be helpful.)

So, if I were going to suggest anything, I would say pick out one area of your life to work on first & then try to find some other people to surround yourself with who are working on achieving similar goals.