Much of the work done when we care becomes tedious and it is at these times that we notice, that we begin to think that what we do does not matter. That is a mistake. All things, all jobs, all activities are tedious when we delve into them in depth. That is the nature of being in depth, of understanding the nature of doing things.
The tediousness does not keep our little voice busy; it does not keep our egos at bay; tediousness is boredom with a different name. Only that when we do something indepth we cannot afford boredom. That is the secret of success and perhaps even contentedness: to realize that all things are tedious at some level. Tediousness is not the problem, it is our attitude towards it that is.
First, to be content we must be motivated by something other than profit. We must be motivated by the virtue of tediousness, the acceptance of boredom. In order to do this we do lose something: our ego, our un-admitted reliance upon what others think. We all care, but perhaps simply about the wrong things.
To enjoy the boredom in our lives is a learned character trait. We dismiss this this simple possibility at our own peril.