Be very specific and deliberate when creating the Instructional Objectives. Same in regards to the course Syllabus, which should be very detailed and should be given to peers or supervisors for editing, corrections or additions. Finally, use a daily checklist to help yourself feel prepared and avoid missing anything (also, a unique-to-the-day checklist will help you stay on task and hit the points you intend to cover). Take notes if a student needs you to follow up on something, so you don't forget.