Everyone reacts differently to a crash. I had been riding horses for over 20 years. I had just lost my favorite horse and purchased a new one against my better instints (I actually wanted to purchase a different horse, but got talked into this one). When I climbed on I had forgotten to adjust a very important part of the bridle. The horse began moving faster then I wanted and when I pulled back, there was nothing. I got scared and bailed off. I was hurt bad enough (head wise) to be taken to the hospital. When I got back on the horse again for the second time the horse spooked, that was the final straw. That really scared me. I knew in my gut that I would never climb on a horse again. I knew if I did I would die. The feeling in my gut was so strong I gave up horses entirely that very day and never looked back and never regretted it. I have taken crashes on my bike too and been hurt worse then on the horse but knew that I was the one that was at fault and figured out exactly what had gone wrong. It took me some time but I always got my confidence back (slowly). It will happen for you too, just take your time and don't rush anything. Don't get back on until you are sure you really want too. Let your mind and body both heal.