My plan for the week is to be a grumpy bitch

I just tried to write down a plan for getting everything done I need to do this week (15 hours of training with kids not in school Thursday, Friday, and Monday, plus a needed car repair and a science project), but writing it all down just made me feel worse and I became so overwhelmed I erased it all. My thought was to plan it all out and try to take control of the situation, but it's too much. I am so wiped out right now emotionally that I don' t think it makes a bit of difference whether I try to HTFU and do and plan things out or just fumble through it as each day comes.
I am feeling angry and resentful at the people I cannot count on to help me without an agenda, I am feeling angry at my teenager for being such a negative PITA. I am feeling emotional because I am overwhelmed, which is why I tried to sit down and think rationally about what I need to do instead of whining about it and being angry. It's just not working right now.