Are you stuck in the middle of a long project that is important to you, but there is no deadline, nor any related urgency? Maybe you do have a deadline, and you just can't seem to muster the will power to get it done? Perhaps something is taking far too long than it should, and you feel some internal interference in getting the job done?
There's hope!
One way to look over the situation is first to compare your situation with how other people deal with these kinds of stalls.
There are many different academic views on motivation. There are perspectives from neuroscience, psychology, sociology, philosophy, and even religious traditions. The views that have some type of step-by-step processes or sequential formulas are most helpful for this exercise. Examples here: https://en.wikipedia.org/wiki/Motivation
Pick a view on motivation
Plug your situation into the process or formula
Look for insights
Repeat until some good options or solutions emerge
If this doesn't resolve the issue, it could be the case that the solution you are trying to implement won't ultimately accomplish the goal. This is where Discipline Troubleshooting and Solution Troubleshooting and Defining the Problem come in.