One of my favorite books is Many Lives, Many Masters by Dr. Brian Weiss.
Along that same line, in 2003, Robert Scwartz had a life changing session with a medium in which he discovered his soul had preplanned everything in advance... Intrigued, he took it a step further and contacted several gifted mediums and intuitives to further explore the concept of prelife planning.
The result is a peek into the process with ten different people in his book: You Soul's Plan. - Here Robert gives us a preview -
I'd like to speak with Robert on Conscious Living and have requested a date. My guides work with me on a daily basis. It's nice to see the connections with others and how each of us works our life plan.
Clearly - we know more than we think but there wouldn't be anything to learn if we remembered all of it in advance. Forgetting is how we create the opportunity to learn and grow... and when it is time... we remember.