I'm 'obliged' by my country to be a police officer when I was still very young. It is hellish to not only need to talk tactfully to people, create their reports... etc.. You also have to placate people who're enraged, people who're depressed and deal with not particularly nice colleagues who seek to bully the newcomer. Answering phone calls from frantic people and colleagues and so on.
Before I became a police officer, I had trouble even going to the grocery or barber. It was hellish. But I can honestly say that I was the better for it because when it's literally sink or swim, I found out that the human mind is far more resilient than it seems. There's a part that is a survivor.
Then after that, I took up something (also somewhat obligated though not compulsory)... I had to take up something else. And this one almost killed me quite literally because it was just too much and my mind nearly snapped.
I actually believe in just confronting your fears head on or indirectly but at the same time, there is also a limit that when surpassed makes the mind snap completely. (Btw I'm a very sensitive person, not some tough guy by the way. I get hurt very easily... but I think it's important to just try...)