I'm Exhausted

Do you ever fell like you are constantly moving but not moving forward or getting anything accomplished? I am so tired and have been working 4 jobs the last 2 weeks. One of those jobs is finally done, so that helps a little. But I am constantly worried about my kids, what life has in store and about a surgery I need but can't seem to make happen. I also have to teach the lesson Sunday and drive Jerika to take her test next week. How do you Mama's with lots of kids function? I need ideas.