Here's a quote from a guy who finished IMLP last year.
"What I learned at IMLP is that indeed the mind can in fact will the body to do things that it shouldn't normally be able to do. It reaffirmed that if swim, bike, run, nutrition are the 4 main disciplines in Ironman racing, mental toughness is certainly the 5th, and perhaps the most important discipline. I went beyond my limits in this race. That, to me, is what brings me back to IM." -Tribodyboarder @ ST
25 weeks this coming Sunday till IMLP.