Three things that have really helped me:
1. Keep a dream journal. I was skeptical at first, but seriously, one of the best things you can do. Not making it up here. Just do it.
2. Try saying a memory mantra to yourself over and over again. "I WILL remember my dreams" has worked great for me, though you have to say it with the intention of following through. Gotta really believe that it will help.
3. When you first wake up, if you feel the dream begin to slip away, hold perfectly still. Moving causes neurons in the brain to fire, and only push the dream farther away. Just hold still while you try to remember as much of it as possible, then immediately reach for your DJ and write it all down.
Oh, and welcome to Dream Views!

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