People often say that motivation doesn't last. Well, neither does bathing - that's why we recommend it daily.
Of course motivation is not permanent. But then, neither is bathing; but it is something you should do on a regular basis.
People do not wander around and then find themselves at the top of Mount Everest.
Go as far as you can see and you will see further.
Motivation is the fuel, necessary to keep the human engine running.
Motivation gets you going and habit gets you there.