You need a system external to yourself to guide your choices day to day. I recommend reading Getting Things Done by David Allen, and The Now Habit by Neil Fiore. These books might help you develop such a system.
(Specifically, Getthing Things Done is a good system for thinking strategically about what you need done, and The Now Habit keeps you working on the plan rather than getting distracted.)
(Specifically, Getthing Things Done is a good system for thinking strategically about what you need done, and The Now Habit keeps you working on the plan rather than getting distracted.)