Couple of trivial ones with good results: Noted down the websites that I visit when I am waiting for something to finish, selected the ones I don't really need

Couple of trivial ones with good results: Noted down the websites that I visit when I am waiting for something to finish, selected the ones I don't really need and blocked them. That reduced the context switching significantly. Also started to brush teeth right after dinner, which avoids the occasional snack afterwards.