Of course motivation is not permanent. But then, neither is bathing; but it is something you should do on a regular basis.
humor motivation Humor
Ability is what you're capable of doing. Motivation determines what you do. Attitude determines how well you do it.
Ability Capable Determines Doing How
Attitude Capable Determines Doing How
Motivation is what gets you started. Habit is what keeps you going.
Going Habit Keeps Motivation Started
If you decide not to take action, you are going to fail, and even if you do take action, if you can’t keep up your motivation, you will simply end up back where you started.
The thrust of continuous action is the firewood which fuels motivation.