I was riding the outside the other day (first time since the snow has melted) and I was having a pretty good ride but Jesse (my horse) was still hanging off my arms and didn't want to go. Near the end of the ride after we had a bit of a break I started to walk with him on the bit and it was a beautiful walk. He arched his neck, was light in my hand and was stepping nicely. So I asked for the canter and it was such a nice transition! He was engaged in the hind end and he didn't even swish his tail! So after one circle of this amazing canter. Usually he just falls out of the canter but not this time! It was a beautiful transition to trot. So I continued the circle (the whole time he was carrying himself) and I asked him for a halt.
Which was almost perfect! I was so happy I almost cried! I gave him a big hug and walked him out.
The reason we keep on going is for that feeling of accomplishment, that all of your hard work has paid off, and you and your horse are truly one. But, I will almost garruntee that you will not know until it happens. And you will definitely know when that moment is.
I am still not sure what makes us keep going even if we havn't experienced that yet... Maybe one day I will find out.