Mark's situation is an example of successful change. Successful change is a spiral - with progress and occasional set-backs followed by progress again. By using his set-back to find new ways to cope with the stress of change (namely playing with his children or taking a walk instead of eating junk food), Mark has progressed further toward his goals of losing weight and lowering his blood pressure. A temporary set-back should not be used as an excuse to give up on your goal and abandon your plans for change. Use it to move you forward instead!