<human>: Hey guys, 

Basically, I have a trampoline in my backyard, and I learnt myself how to backflip, apparently with a horrid technique. So one day, I was happily jumping and I slipped on the jump before going to do a backflip, landed badly and hurt my neck and back, nothing severe, enough to cause some pain. So, a couple of months later, completely recovered, I go out back to keep jumping, and it turns out that I literally cannot backflip, I've been trying for the past week to no avail, I can never get my head underneath me, I know it's just a mental block, but I have no idea how to overcome it, some help please?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Mental block not letting me backflip after a previous failed backflip caused neck and back pain. I need some tips as to how to overcome it.