When you think, you are late. When you are late, you muscle. When you use muscle, you get tired. When you get tired, you loose. This sounds very much like Rodney King, but it's actually for Saulo Ribeiro.
Way to not think is not to antisipate opponents move, but more like feel where he is going. Ofcourse you need to have a lot of repetition to be sharp and instictively know all the posibilities. You need to stay in presense. Not what is going to happen or what just went wrong. It's the moment that counts.
Also staying at the present moment relaxes you. Breath, be relaxed, have fun...and tap.