Yeah...I've really only been on a mountain bike a handful of times. I have a couple of friends who took to it like they were born on knobby tires, though. Crazy how natural it seemed for them. I doubt I will ever stop falling on a regular basis.
You don't know how encouraging it was for me to read this! I've been going through a confidence "slump" on the trails after my little run of falls and injuries, but I think I am starting to climb out of it finally.