What does it mean to practice wholeheartedly?

Wholeheartedly Defined Officially: without reserve; without reservation; Showing or characterized by complete sincerity and commitment
Wholehearted: with unconditional and enthusiastic devotion; the quality of hearty sincerity; wholeheartedness - undivided commitment or unreserved enthusiasm

Apparently in a non-martial art way this simply means one who devotes their efforts with complete and absolute commitment with enthusiastic devotion. This seems to fit what many in my system mean when they say, "The Master (Shimabuku, Tatsuo Sensei) wants us to practice Isshinryu wholeheartedly!" I can also agree with Charles Goodin Sensei's blog post excerpt [" ... simply practice Karate for Karate ... if you practice Karate wholeheartedly, you will become better at Karate."] that to achieve good karate one must practice wholeheartedly.

It appears there is no mystery to this quote or the saying of many Isshinryu practitioners. It is simply conveying a meaning of practice and training as the only true way to achieve any significant level of proficiency.

A recent blog post stated, "As a martial artist, shouldn't you be looking for ways to improve, to learn more, and to try new things? " The question would seem to tell us that to be a MA one must practice wholeheartedly - isn't this the type of trait that says, "Wholehearted?"

As to the Isshinryu connection it may be that when presenting the ken-po goku-i, the name being one heart way and the references to heart in the goku-i that one incorrectly assumed wholehearted or wholeheartedly was some mysterious connection. It can be connected but I would feel now that my view above is actually what is meant by saying, "Practice Isshinryu wholeheartedly as intended by Tatsuo Sensei."