"The true Christian tests himself every day. Daily testing to see whether we have become better or worse, is so essential for us that without it we cannot be called Christians. Constantly and persistently we must take ourselves in hand. Do this: from the morning establish thoughts about the Lord firmly in your mind and then during the whole day resist any deviation from these thoughts. Whatever you are doing, with whomever you are speaking, whether you are going somewhere or sitting, let your mind be with the Lord. You will forget yourself, and stray from this path; but again turn to the Lord and rebuke yourself with sorrow. This is the podvig of spiritual attentiveness."
- Saint Theophan the Recluse