Answer:
The answer is "walk on eggs"
Step-by-step explanation:
The expression "walk on eggs" or sometimes "walk on eggshels" makes reference to the action of beeing very careful of the worlds one uses with the objetive of not insulting anyone, not ofending anyone, not doing something wrong.
As we see in the sentence, the person is very sensitive, so people try to be careful and not say anything that might offend or insult him.