How do you stay motivated, to start or continue something, or does it mean you don't really want it?

In terms of goals, pursing dreams, that sort of thing. At what point you are not motivated enough or hungry for it that it becomes hey maybe you just don’t really want to do it or achieve it.(If that makes sense)

Procrastination comes to mind. Sometimes it is not that I’ll put efforts in to try I can do that,but lack discipline, intensity, or long term commitment to something. Perhaps even fear or not feeling like I’d ever be able to do it.

I’ve heard of this false motive stuff in essence you fluff your self up constantly so you keep going. However maybe it is not for you?

Any personal stories or thoughts?