One of the things I can use right away was learned near the end of the course.  

Not being uneasy about doing the right thing poorly and recognizing that this is part of the learning process and that it is the only way to get to the final block (doing the right thing well) is helpful.  Knowing that I am not alone in this worry is also helpful.  I will be more confident about having to do the right thing poorly when this comes up in the future and not be so worried about it.  This is something that I can immediately integrate into my work and will reduce my personal stress levels.