I, and many others here, would appreciate your tips on using psychological tactics in races. The basics, plus the fine arts please.

It's probably best to divide them into two areas:

1) Your personal attitude, and strategy in the race.

2) Dealing with opponents during the race.

To start us off, I'll mention this from a club race last week.

I was pushing on, solo, up a 18 km long climb averaging 6%+ gradient, and feeling good overtaking riders. Then one of them clamped onto my back-wheel, and I noticed a subtle change in my mentality. The wheel sucker really drained my mental resources, not until I shook him off did I regain my composure and began to enjoy pushing on solo again. The point is, I was surprised how dramatic an effect just sitting on my wheel was. I made a mental note to use the same tactic myself in future.

How do you deal mentally with wheel limpets?