1.  Take a Phosphatidylserine supplement
2. Exercise your mind to enhance your memory skills and learn more to enlarge your bank of knowledge from which to draw memories.
3. Protect your health by eating healthy
4. Change your attitude toward stress
5. Maintain your health with exercise
6. Maintain a positive attitude

From "The Memory Cure" by Thomas Crook, Ph.D. and Brenda Adderly, M.H.A. 

Temporal Lobe Therapy (Where memories are stored)

1. Create a library of wonderful experiences
2. Sing whenever you can
3. Toning:  Ahh, Ee, Oh
4. Listen to classical music
5. Play an instrument
6. Move in rhythms 

From "Change Your Brain, Change Your Life", by Daniel G. Amen, M.D.