Another useful lesson we had last week was about the power of saying no.
Y'know, when your boss comes to you and asks you to do just one more thing to help him out.
You really want to tell him where to go because you're already manic, but your scared, don't want to be rude, or don't want to miss an opportunity by saying no.
I managed to get myself into a habit of saying yes all the time, which resulted in me being taken for granted and getting more and more stressed. Saying no can be really powerful, and doesn't have to be negative - as long as come up with a mutually convenient solution.
We learnt to Acknowledge the situation, Exit if necessary, and think about what you could achieve and provide a couple of Solutions that suit both of you.