Quote from ACIM Text Chapter 4, Section 1 - Introduction.

The journey to the cross should be the last "useless journey." Do not dwell upon it, but dismiss it as accomplished. If you can accept it as your own last useless journey, you are also free to join my resurrection. Until you do so your life is indeed wasted. It merely re-enacts the separation, the loss of power, the futile attempts of the ego at reparation, and finally the crucifixion of the body, or death. Such repetitions are endless until they are voluntarily given up. Do not make the pathetic error of "clinging to the old rugged cross." The only message of the crucifixion is that you can overcome the cross. Until then you are free to crucify yourself as often as you choose. This is not the gospel I intended to offer you. We have another journey to undertake, and if you will read these lessons carefully they will help prepare you to undertake it.