I'm not sure I understand what does it mean, "hold one's breath". Could someone help please?
An unknown guy comes to a local agency and wants to try himself in acting, at least in the commercials. Being realist, he does not expect to become a world celebrity the next day, but really wants to get himself out there. And then he says to the agent: I won't hold my breath, considering we're talking Texas and not Hollywood.
Does it mean he does not put his expectations too high, or that he is not too nervous about the results, or that it's easy for him, or something else?