The important "keyword" there is "begin".
If you want to get motivated, then start doing it slowly at first, until you've gotten that "flow" in you. And later on you will realize that you are now on your passion again, your blood is starting to flow again, your energy is increasing again, and your enthusiasm is coming back again.
It's because you "started". You began doing it. That's the secret, "Just Do It"..
