Oops, I seem to have read the OP wrong and responded in the wrong way.
My post still stands as a general guide, though. Just not directed to the OP, as they didn't say anything about themselves wanting to get a gun to cope with their fear, just the hypothetical.
I have anxiety disorder and have paranoid episodes. I have recognized that it wouldn't be safe for me to have a gun, even though these problems are being treated by doctors, because it would just fuel my fear even more.
This wouldn't be the case for everyone, and I am not saying that it is. However, problems like anxiety, fear, and paranoia need to be addressed before taking the next step. This will help prevent harm from stress and anxiety, as the person will be more stable to make the decision without it being based on fear.