There are a few studies out there discussing the merits of optimism, pessimism and realism. Ultimately, these studies try to conclude which one is best and often conclude that one has a higher survival rate than the others. Instead of linking to all those bogus studies, I suggest you read the following quote, listen to Styx and come to your own conclusions.
“The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.”
– William Arthur Ward
The Derek Janiak Hepatobiliary Forum 
Derek & Logan,
We are sending every bit of good juju your way and looking forward to hearing that the surgery is behind you so that the healing and good health can begin… you will be in our thoughts all day long!
All of our love and well wishes are going your way, Daria, Mike, Adria & Jenna XO