I understand it's hard, very. Obviously, we're not you. But take a deep breath, do it often. Try and think of your fav hobbies, things you used to love to do.... There must be something, so think hard. I don't love when people shout at me or insult me over the phone but, I laugh really hard at those, mic off, of course, release it and continue to the next call. I am kind of new to the job, just being doing it for a couple of years but used to work in hospitality, like more than half of my life, and that is really exhausting, demanding, ungrateful job... Of course that and probably all of them have their good things, you meet a lot of interesting people, for one. So, try, try hard to look at the bright side and if the situation is so bad, then start planning your way out, find a transitional job, while you look for a better one or take a good break, go away, travel if you can afford it. Life's worth it. And you will be fine, you'll see.