Rolf Dobelli on long-term thinking and persistence

Once you've identified your circle of competence, stick to it as long as possible.  Likewise if you find a good spouse, a suitable place to live or a rewarding hobby.  Perseverance, tenacity and long-term thinking are highly valuable yet underrated virtues.

~ Rolf Dobelli, The Art of the Good Life, "The Secret of Persistence," p. 61