"I am your constant companion. I am your greatest helper or heaviest burden. I will push you onward or drag you down to failure. I am completely at your command. Half the things you do, you might just as well turn over to me and I will be able to do them quickly and correctly. I am easily managed. You must merely be firm with me. Show me exactly how you want something done and after a few minutes I will do it automatically. I am the servant of all great men, and alas, of failures as well. Those who are great, I have made great. Those who are failures, I have made failures. I am not a machine, though I work with all the precision of a machine plus the intelligence of man. You may run me for profit or run me for ruin—it makes no difference to me. Take me, train me, be firm with me, and I will place the world at your feet. Be easy with me, and I will destroy you. Who am I? I am habit! [Anonymous]"

- Ardeth Kapp