We haven't talked personally yet, but I've read or heard about you several times and I want you to know that you're a very well-known person in this forum (also in the local boards). You have achieved so much in your life and you will definitely achieve much more, stay as strong as before and keep positive thoughts! You will also get this operation successfully over and we will be happy to see you again with us as a great manager and great member of the forum.
Remember: After every dark night comes a bright day! I wish you all the best for your surgery!