My husband bought me three yearlings about 6 years ago. Two fillies and a gelding. I clicked with the gelding right away. He was tall, gorgeous, lovely personality. (So were the fillies, but I only had eyes for the gelding.) When they were three I sent him to the trainer for 30 days. He was going extremely well and I was riding him everywhere that year. Over the winter he didn't get ridden as much and come spring his whole demeanor changed. He started bucking me off. He went back to the trainer for another 30 days. Never bucked once with the trainer. I know it was rider error.
Well, I tried and tried to work him through it, but to no avail. I broke a rib and hubby said that was it. Horse had to go. I tried for a year to make things work with that gelding, but he was very sensitive and just too much horse for me. It got to the point that the thought of riding him made me sick, but I had to do it. I finally came to the realization that I wasn't having any fun and neither was the horse. It took a year to sell him (because I told everyone who looked at him about his bucking issue!) but he went to a very accomplished young lady who adores him and rides him every day.
Now that he has moved on, I have discovered a true jewel right under my nose.....the filly that went to training with him. I was so focused on the gelding, that I just absent-mindedly rode the filly. Once I really started working with her and giving her 100% of my attention I have watched us both blossom. Even though she has the same bloodlines as the gelding, she is just very laid back and forgiving. She takes it all in stride and gives her whole heart. Best thing I ever did was sell that gelding. I cried for a week because I loved him so much, but we are both better off for it.