Screw motivation, what you need is discipline
IMO this makes the most important point at the very end. “Being disciplined” itself is a consequence of motivation, or is effectively that. Building habits however, requires very little discipline or motivation so long as you build them strategically - I.e. start so small it’d be ridiculous not to do it regardless of how motivated or disciplined you are.And by “start small” I mean “floss one tooth per night for 3 months to build a flossing habit” small. Let your good habits progressively and slowly consume more time, similar to what bad habits do.For all intents and purposes you should just assume both discipline and motivation are completely mythical and you should construct a system of high-leverage habits to obviate the need for them. You don’t rise to the level of your talents/motivation/discipline, you fall to the level of your habits.