I think most of us have things in our lives that we are so committed to that nothing takes priority over it. It may be our kids. It may be our job, or a spouse or significant other. But you'd do anything for it and choose it over anything that comes up against it.
Some people build every detail of their lives around the development a particular skill. They train crazy hours and go to extreme measures for even the tiniest gains. But that one thing isn't usually God. Imagine if it was.