I think it's worth it. Whenever, I get frustrated with the thought of this long arduous process, I got and put on my running shoes and run till it's out of my system. So, the accompanying stress does have its health benefits. 😀
On a more serious note, I think G3 is right on the ball. This takes a lot of dedication; do you have the stamina to go through with it all the way until you reach the completion point (residency/fellowship)?