when making an appointment on your calendar put the exact time of the appointment in the subject ie dentist appointment - 8am  for me i often forget the 8am part and focus on what time i need to leave the house so i tell myself that same appointment is at 730amand then i sometimes get confused forget i already took off the travel time and continue to walk the appointment back having the exact time of the appointment in the subject of said appointment is a huge help when trying to remember if i already accounted for travel time sometimes i will put an 8am appointment on my calendar for 730am proactively