I don't know the trail, but I remember similar doubts over drops, they used to really screw with my head. I take it you mean drop-in or chute rather than a big step down?
If so, two things to try, if possible on similar drops in a different trail. Firstly, drop your seat a few inches before you go down. You'll be able to shift your body weight around to ease the sharp transition of the bike as it starts to drop in. It also stops you from perching over the middle of the bike and looking over the front wheel, which will nearly always give you the impression that you're going over the bars.
Approach with caution. You don't need any speed to drop in, but you do need to be ready and clipped in or balanced on the pedals, standing in the "attack" position. You also need to tell yourself where you'll be able to brake to scrub off speed after you've dropped in (if you need to ) As the front wheel starts to go over the edge, relax your arms, elbows out, and shift your weight (backside!) over the back of the saddle. Drop your heels as you do so. This way your body weight is over the middle and back of the bike, and the front will take care of itself. As the bike rolls down you can stay as you are, and then as the bike levels out (or G's out if it's a bomb-hole style drop) you need to smoothly transfer your weigh back to centre, then towards the front as the bike starts to climb on the other side.
Mental blocks are a difficult thing to overcome, but you need to look for ways to replicate any "bogey" obstacles. Remember, the bike doesn't want to fall over any more than you do, and as long as your weight is back and your heels dropped, the likelihood of barring it is greatly reduced.
