Anxiety Trap

I always do this to myself. I haven't substituted for another school in a while and today I am doing a half day in elementary either 4th or 5th and I am over analyzing everything. I am such a control freak sometimes that I worry about the tiniest thing going wrong. Im just trying to think positively and hopefully I will have a challenging but a exciting day. Im just over myself being so anxious about situations I have little control over. I just want to be a teacher so badly that I forget that im not perfect and that I still have a lot to learn. This is my last substitute assignment until the fall. I just hope that if is not the best experience in the world that I can take a positive approach to it.