Learn to countersteer. Weight the outside pedal, point your knee into the turn (watch videos of motorcycle racers, it's similar). STAY OFF PAINTED LINES WHEN CORNERING, PARTICULARY IN THE WET, THEY ARE DEATH. I'm a relatively fearless descender, that's because I know how to handle a bike @ speed (I ride motorcycles too) and because fear generally a bigger danger to you than almost anything else on the bike. Like they say in Star Wars or Dune or some damn scifi book fear is the mind killer. That being said, know what can actually doom you on a descent:

• Pick the right line through the turn

• Brake BEFORE the turn, carry too much speed on two wheels and it's often too late to NOT crash

• Look 50-100 feet up the road, not at the pavement 10' in front of your bike. On a descent it's too late to avoid anything that close to you any way. You need to see it BEFORE you get there.