I recommend to you this excellent article written by the authors of The Invisible Gorilla: How Our Intuitions Deceive Us. They offer 10 ways to check the accuracy of our very malleable and faulty memory.
Journalists know that when they hear something from one source, they should corroborate it with independent sources before reporting it. The science of memory has taught us that our own memories are also unreliable sources, just as needy of corroboration.
Click to read the rest of "How Not to Be the Next Brian Williams: Ten ways to avoid false memories" (Slate).