Descent Fear

Hey all. It's my first time on the forum so be kind!

I have an embarrassing problem. No, not that one - that's cleared up now. The problem is that I'm terrible on downhill stretches. If I'm out with a group, there's a good chance that they're going to be at the bottom of the hill well before I am, because I'm teetering down with my grip firmly on the brakes. It never used to be a problem when I was a kid, bombing down the steepest of slopes. Now I'm creeping up for 40 it's become a real issue.

A particularly white knuckle descent down Sundridge Hill in Kent the other day made me think it's something that I really need to improve on. I think part of the problem is that I don't have enough faith in modern day brakes to bring me to a stop if I started losing control or if something ran out in front of me - but I'm also conscious that I need to improve my technique and confidence. What advice would you all offer to someone with such an affliction?