In midlife, people can become so overwhelmed with multiple demands on their time that they can't get started on anything, much less those tasks that they need to get through somehow. You've got to get stuff done at work, pick up your kids, finish cleaning out your closets, maybe head to the gym, and get dinner on the table.
In AA and other recovery programs, willpower is an unreliable tool for abstinence. Effortful self-regulation can and does fail us, and such failures can leave us vulnerable to impatient decision making. A better alternative can be seen in another practice well known in the rooms of recovery -- the gratitude list.
Thinking about the consequences of failure, ignoring your feelings and engaging in detailed planning don't sound as fun as advice like "Follow your passion!" or "Stay positive!" But they have the decided advantage of actually being effective -- which, as it happens, is exactly what you'll be if you use them.