Because the OP seems to suggest you overcome lack of motivation by pretending you have motivation, but he calls this discipline and consistency. Also, the comments about fake it till you make it support that interpretation.
It's not about pretending you have motivation; it's about using discipline and consistency (having a routine) to get you through the periods where your motivation wanes.
Motivation comes and goes; discipline is as eternal as you will it to be.
I've also gone to meetings.