Here are 4 interviews with the 4 free solo world record holders all telling us how NOT to free solo! Thank you Spencer Seabrooke, Friedi Kuhne, Andy Lewis, and Faith Dickey for sharing. 
The video clips of them free soloing can be found on the following urls:
https://www.youtube.com/watch?v=kUhNA…
https://www.youtube.com/watch?v=MFgUR…
https://www.youtube.com/watch?v=zEH87…
https://www.youtube.com/watch?v=EzrI8…
and the film “Reel Rock 9”