What is the difference between motivation and discipline?

On Ep. 385, Nikkiey explains that almost everyone starts fired up, whether that is a new week or joining WarriorBabe. That motivation tends to wash out three or six months in. Then people wait for it to come back, and she calls that the emotional reason people quit. On Ep. 225 she makes the same point about start dates. If you wait for February 1st to feel motivated, you may wake up that day not feeling it and push everything to March 1st. Her view is that there is no perfect time to start.

She defines self-discipline as the ability to control your feelings and overcome your weaknesses, and to pursue what you know is right despite the temptation to abandon it. In practice that means working out, tracking macros, sleeping, drinking water and getting your steps in when you feel tired, had a long day, feel like an imposter or are scared of the weight room. Those are feelings, and she says you can act despite them. Her own example: she plans to train at 3 p.m., doesn't feel like it at 2:30, and goes anyway. She also calls sleep one of the truest tests of discipline. That means turning off the show at bedtime and not hitting snooze.

On Ep. 225 she pairs discipline with grace. Don't beat yourself up when you slip. Notice what happened, adjust and keep going. If you have struggled to stay consistent, she would say the problem was a plan built on feelings, not you.