I've been teaching for over 8 months and everday I still get worried. I always, always make sure that I am prepared. From making copy's of my lesson plan, making sure my slides are in order, making sure I have the necessary writing tools. I am so prepared that sometimes I feel over prepared. I still worry that my students will not be able to grasp what I am teaching. I always allow time after class for the students to ask me questions about the lessons for that day.