A friend once told me that staying motivated isn't something you do once and the effect will last, it's something you need to do continually.

​"As a single footstep will not make a path on the earth, so a single thought will not make a pathway in the mind. To make a deep physical path, we walk again and again. To make a deep mental path, we must think over and over the kind of  thoughts we wish to dominate our lives." - Henry David Thoreau