Beth - I know I haven't been around much lately because of stuff going on in my life right now, and I am so sorry for going MIA, but I feel the pain in your last post and I am near tears here. So I have a couple of things to say:
First, take a deep breath. Take another one. One more. Okay, now - don't try to handle everything at once. It is so overwhelming you will be tempted to just give up and stop trying. You know that can't happen, nor will it - you are too strong to let it. Still, it's hard to stay strong when you feel like the world around you is falling down and all the work and worry is on your shoulders. So take it one day at a time - or even one hour at a time if that's what it takes. Don't stress or get anxious about what will happen tomorrow or next week or next month - easier said than done, I know, but it's important to try to focus on RIGHT NOW. Just handle what is going on right now - this minute. If Kate is having a difficult night, then she is what you focus on (like you did earlier this week - and how fortunate she is to have you as her rock). If the car issues are what is most important at a particular point in time, that is what you focus on (so glad no one was hurt, but very sorry you are having to deal with this extra stress, especially after the earlier fender bender your Dad caused). If the house or your job requires extra attention on a particular day, that is what you focus on. If Jon is being a donkey's butt and you have no choice, then deal with him. If you feel like you're losing it, then it's time to focus on you in whatever way you find most comforting - a cup of hot tea, a glass of wine, a good book, a favorite movie, a long nap, whatever you find relaxing - until you gather your strength and can once again face a new day. And crying is not always a bad thing. Sometimes the tears just need to come - so let them come. But don't feel that you have to deal with everything all at once all the time - you don't. One thing at a time. If it seems that several problems are all clamoring for your attention at once, then prioritize. What's the most urgent issue right now? That's what you deal with - and leave the rest alone for right then.
I wish I had more to offer, but that's my take on how to deal when you feel like life is slapping you around. Big hugs, my friend -

- you WILL get through this!
Susan