I am really really tired

I have never felt so tired in my entire teaching career. Today, I talked non-stop for 7 hours, walked around to help students solve problems for another 2 hours, and was busy settling administrative issues for another 2 hours. How much of this can I take? And tomorrow morning, my class starts at 830am and does not end till 3pm. After that, there's an event in school that requires me to drive out and pick up stuff.

It got so bad I totally forgot one meeting that I had this morning and to pay for my shares by 9pm tonight. I am feeling so angry with myself, for being the Ms. Nice Gal, who says yes to everything people ask of me to do. I don't want to compromise myself anymore.

Next semester, I am going to say no to things I don't want to do and to push away tasks that I think I can't handle. I don't want to feel this burnt out anymore.

I am really tired.