Via Farnam Street:
Look at any part of your life in which you are consistently effective and you will find that certain habits help make that possible. If you eat in a healthy way, it is probably because you have built routines around the food you buy and what you are willing to order at restaurants. If you are fit, it is probably because you have regular days and times for working out. If you are successful in a sales job, you probably have a ritual of mental preparation for calls and ways that you talk to yourself to stay positive in the face of rejection. If you manage others effectively, you likely have a style of giving feedback that leaves people feeling challenged rather than threatened. If you are closely connected to your spouse and your children, you probably have rituals around spending time with them. If you sustain high positive energy despite an extremely demanding job, you almost certainly have predictable ways of insuring that you get intermittent recovery. Creating positive rituals is the most powerful means we have found to effectively manage energy in the service of full engagement.
See also James Clear’s How to Be Motivated Every Day: Lessons Learned from Twyla Tharp.