The fear of the Lord is our cross. Just as someone who is crucified no longer has the power of moving or turning his limbs in any direction as he pleases, so we also ought to fasten our wishes and desires, not in accordance with what is pleasant and delightful to us now, but in accordance with the law of the Lord, where it hems us in. Being fastened to the wood of the cross means: no longer considering things present; not thinking about one’s preferences; not being disturbed by anxiety and care for the future; not being aroused by any desire to possess, nor inflamed by any pride or strife or rivalry; not grieving at present injuries, and not calling past injuries to mind; and while still breathing and in the present body, considering oneself dead to all earthly things, and sending the thoughts of one’s heart on ahead to that place where, one does not doubt, one will soon arrive
John Cassian, Institutes, Book IV ch.35
Novus Motus Oxoniensis 