Be careful with that knife or you'll cut yourself!
After that you could choose a partner to talk about what you usually do in your free time and the last thing was to describe yourself in front of the class. (Preliminary English Test; B1; Portuguese)
We didn't mean to leave you all by yourself.
Can you lift it by yourself?
Did you make the dress yourself?
You can do that yourself.
It is difficult to g[et] there by yourself. (Key English Test; A2; Japanese)
If you yourself ever need help, would you know where to get it?
If you are thinking of taking it up yourself always do [a] warm-up exercise before you run, don't go too fast at the beginning, and don't overdo it. (First Certificate in English; B2; Hungarian)
You tell yourself everything's all right, but you know it really isn't.
You help yourself by doing some exercise. (First Certificate in English; B2; Portuguese)