If you find yourself consistently angry about a recurring problem (e.g., a colleague’s failure to meet deadlines, repeated technology issues) it may be a good idea to focus on the overall goal you are trying to achieve and to plan the potential problem into the timeline.
For example, if your goal is to meet a friend for dinner and leave enough time to catch a movie, but your friend is often late (making it hard to catch the movie in time). You could just ask them to meet you earlier. Leaving yourself, and them, enough time achieve your ultimate goal will leave you relaxed instead of tense. Paying attention to the big picture can help you plan ahead and avoid getting angry when things don’t work out.