Go through last year’s appointment book and estimate the average number of appointments per day. Compare this to the number of lines or spaces the appointment book has for each day’s appointments. If the two numbers are similar, then either you are managing your schedule too tightly, or you need a larger appointment book format. If the number of spaces for appointments is more than 5 times the number of appointments you actually have, you will probably find your schedule less stressful if you switch to a smaller appointment book format.