Your gloves are missing again. Your dentist appointment? Completely forgotten. Your niece's birthday – uh, sometime in the summer? You do know one thing for certain: You and your memory are constantly in opposition. Still, you keep hoping it's a relationship that can be improved. The odds may not appear to be in your favor. "Despite the fact that I have studied memory for a long time, my tendency is to try to avoid relying on mine," says Aaron P. Nelson, Ph.D., chief of neuropsychology at Brigham and Women's Hospital, in Boston, and the author of "The Harvard Medical School Guide to Achieving Optimal Memory" (McGraw Hill, $15). Rather than depend on something so undependable, Nelson and other researchers recommend a few practical strategies for the most common types of memory lapses.