These are all common
1.Don't overdo it.
2.Don't overwork yourself..
4.Don't be so hard on yourself.
5.Don't push yourself.
6.Don't work so (too) hard.
7.Don't wear yourself out.
8.Don't strain yourself.
11. Take it easy
You can say this but it sounds like you're in a movie because people mostly say this in movies to challange a person or to blame them.
Don't bite off more than you can chew.
Never heard these ones before, although they make sense, I wouldn't advise using them.
Don't overtax yourself.
Don't break your neck