Sometimes the best practice is to put some music and dance freely, just look at a wild landscape, be present or engage in sensual exploration.
Discipline and techniques are fantastic.
Alternate freedom and discipline in your spiritual approaches.
A rigid mind can be an obstacle to your evolution.
A compulsive quest for perfection can alienate you.
Overuse of will power can dry out your life force.
If you feel that you hit a motivation gap, explore free flow approaches, let go of discipline and do what you feel like doing first or what feels like the most fun.