Keeping your emotions in check is always tough when you're faced with a difficult decision. Author Simon Sinek suggests that one of the best ways to counter your emotions is to think about the results of a decision. If nothing good happens, you don't need to make it at all.
Using the example of a frustrated email where someone asks him for a favour, Sinek asks himself, "what good will come from this?" When he realises that neither sending out an angry reply or a nice one will result in anything good, he decides to send nothing at all. We know decision fatigue zaps your willpower, and the more decisions you can eliminate throughout the day, the better off you'll be.