The best advice I ever came across on the subject of concentration is: Wherever you are, be there.
Jim RohnLeaders must learn to discipline their disappointments. It's not what happens to us, it is what we choose to do about what happens that makes the difference in how our lives turn out.
Jim RohnSharpen your interest in two major subjects: life and people. You will only gather information from a source if you are interested in it.
Jim Rohn