live on your nerves
live on (one's) nerves
To be in a constant state of anxiety, fear, or worry. Marty seems to be living on his nerves ever since the accident.
live on your nervesBRITISH
If someone lives on their nerves, they are always worried and anxious, usually because they are in a difficult situation. In the run-up to the election she was living on her nerves.