Misery, Money and Miserable Old Bags

I am in need of a hug. Don't you just just hate rude old people? I had one customer today who is the nastiest, rudest woman I have ever met, she throws her shopping at you, throws her money at you and never says please or thank you. She wanted a bottle of gin today and instead of saying 'could I have a bottle of gin please?' like most normal people, she flicked her finger at me and said 'Gin' like I was some kind of stupid, freak not worth speaking to. Snotty bitch. The two women in the queue behind her were laughing, probably at my very carefully immobile expression. They could tell I was fuming. It really makes me mad when these old baggages come in with no manners and expect to be treated with the same respect as the nice, polite people. Respect is earned, and I'm sorry but if they are going to treat me like shit, they don't get any respect from me, I don't care how old they are, it doesn't make them right and it doesn't gve them the right to speak to me like that. In contrast we have a little old lady that comes in, she turned one hundred last week, she can't see very well, and she is the lovliest person you could ever meet, you would do anything for her, and she is polite and grateful for any help.
Despite the evil old woman, I was in quite a good mood today, until I checked my bank balance. I'm over my overdraft limit. Don't know how I managed it because I thought I had a bit left in my account, but there you go. You work 40 hours a week and you can't fucking afford to live. What is the point??? I'm really pisssed off and miserable and I don't really give a shit about anything any more. Sorry about the language, but as you can see I'm not in the best of moods

Things to be grateful for?

Not fucking likely.