Dedication to one aspect or another is good for a while, but I've found, on the whole, that balance, from several points of view, can get you "a little further down the road". Sacrifice some breadth for depth of interest, once in a while.
Unfortunately, many of us find we get too much enjoyment from not just doing well, but from doing better than others. Sometimes, as you seem to have found, we must get enjoyment solely from the sake of just doing.
end of philosophy 101
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