Anna Goldfarb on “How to Be a More Patient Person”:
If your impatience trigger is killing time in waiting rooms, designate a game on your phone that you play only when you’re at the doctor’s office. If you detest being in traffic, leave for appointments earlier. If you abhor crowded grocery stores, run your errands at off-hours.
I always carry a book with me wherever I go so that I can read to kill time.