I teach university courses, and several times I forgot to go to class on time. It was humiliating, not to mention very inconvenient to students. I’ve also missed meetings, appointments, you-name-it. I tried alarms on my phone, but I don’t like to carry my phone with me every minute. Lately I’ve started wearing an inexpensive fitness watch (think FitBit but much cheaper). I program it to vibrate five minutes before each class. It’s made a huge difference. I don’t worry or obsessively check the clock. I can also quickly program it to vibrate for appointments and meetings. I feel much more relaxed and confident about getting where I need to be.