The big factor here is when a pilot or FA has a meltdown at work it is very public and ALWAYS in the news. No body wants to hear about the factory worker who had a meltdown and now the widget production line is two days behind schedule, but if it were airline staff and the flight was an hour late - headline news.
FA's are selected for their ability to deal with stressful situations - so generally cope quite well, up to a point. By the time they reach their limit the stress burden is so great that the meltdown will be spectacular (for all the wrong reasons)
If you are having a few troubles then for god sake talk about it - don't just keep shaking the champagne bottle and hoping the cork will stay on!
If you need a script for some "happy pills" that may (but not necessarily) affect your medical and you are worried about being unfit for duty then don't be afraid to go to another Dr. A correctly diagnosed and appropriately treated problem is much less risk than going undiagnosed and untreated until.
After all wouldn't you expect the engineer to fix the crack in the turbine blade (that didn't fail on the last flight) rather than just pretend it wasn't there and 'hope it don't fail' on the next.
Watch out for your mates and lets take care of each other.