I started back in September, 2008 after an 18 year hiatus. During my third or fourth lesson, the lesson horse I was on decided he was done and did a big spin to get me off. I broke my finger, and couldn't ride for a couple of months while the pins were in it. After I healed up, I went back, and was a complete basket case! I had never been a fearful rider before, so this was a horrible new experience for me! I was basically back to being a 100% complete beginner. The key to working through it was a **very** patient instructor/trainer who gave me enough time to work past my anxiety, but also knew when to push me a bit.
I also bought a QH in October of 2009 who is a saint, with a smooth as silk canter.
Then, I came off in July, 2010 doing some gymnastic exercises and broke my collar bone! I am still overcoming some anxiety from that, but not nearly as much as the first fall/broken finger. Since this second fall was off of my own horse, and I know it was just one of those accidents that can happen when riding a 1,100 pound animal, I have done better mentally coming back this time. But it still sucks to take some steps backward again.
I'd really like to be able to fall off without breaking something!
Bottom line for me is this, I love riding and my horse, and I'm just going to keep at it. I am a little bitter that the progress is way slower than I anticipated it would be when I came back in September of 2008, but I keep telling myself it's progress nonetheless.