On Being Used Up

I've been inspired by this quote over the past few months.  It reminds me to keep focused on who I want to be, not the many tiny details that aren't working out the way I want them to in this moment.

There is the true joy of life: to be used by a purpose recognized by yourself as a mighty one; to be thoroughly worn out before being thrown on the scrap heap; to be a force of nature instead of a feverish, selfish little clod of ailments and grievances complaining that life will not devote itself to making you happy.
            George Bernard Shaw