I don' know about too many others, but for me, when I did come to terms with it I was devastated. I was crushed. Even with the burn out I still loved the job. Some may argue that it was a blow to my ego, but I don't believe that was it at all. It's just that when you have worked for something for so long and so hard to get where you wanted to be, and it was something you loved, just giving it all up would be difficult for anybody.
Some people would try and convince you that they thought you still had what it takes to keep going. Their hearts are in the right place and are trying to be supportive, but it's like you have to explain to them what you are going through. I hated to say it but I just had to tell people that I just couldn't do it anymore. I would just be putting myself and others in danger. One of the most important pieces of advice I give is to know your limitations and to respect them.