http://www.helpguide.org/life/improving_memory.htm
Improving memory tip 3: Keep stress in check
Stress is one of the brains worst enemies. Over time, if left unchecked, chronic stress destroys brain cells and damages the hippocampus, the region of the brain involved in the formation of new memories and the retrieval of old ones.
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Memory, like muscular strength, requires you to use it or lose it. The more you work out your brain, the better youll be able to process and remember information. The best brain exercising activities break your routine and challenge you to use and develop new brain pathways. Activities that require using your hands are a great way to exercise your brain. Playing a musical instrument, juggling, enjoying a game of ping pong (table tennis), making pottery, knitting, or needlework are activities that exercise the brain by challenging hand-eye coordination, spatial-temporal reasoning, and creativity.
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Use mnemonic devices to make memorization easier
Mnemonics (the initial m is silent) are clues of any kind that help us remember something, usually by helping us associate the information we want to remember with a visual image, a sentence, or a word.
Mnemonic device Example
Visual image Associate a visual image with a word or name to help you remember them better. Positive, pleasant images that are vivid, colorful, and three-dimensional will be easier to remember.
To remember the name Rosa Parks and what shes known for, picture a woman sitting on a park bench surrounded by roses, waiting as her bus pulls up.
Acrostic (or sentence) - Make up a sentence in which the first letter of each word is part of or represents the initial of what you want to remember.
The sentence Every good boy does fine to memorize the lines of the treble clef, representing the notes E, G, B, D, and F.
There is much more on the link.
Thanks for the thread, BlancheSplanchnik.