Focusing in on a specific problem
Part of the challenge of making a difference in the world is finding the right problem to solve.
The world is full of problems. You can’t solve them all. You have to find something that is (a) a problem (b) that you are equipped to solve (skills, knowledge, resources), (c) that you are passionate about solving, and (d) that you can motivate others to help solve.
(1) not identifying any problems at all (head in the sand)
(2) being unable to do anything about any problem (ill-equipped, ill-informed, ill-educated)
(3) being unwilling to do anything about any problem (lazy, apathetic, unpassionate)
(4) being unconnected to enough resources to make a difference (you can’t do it on your own).
Picking any problem at all is the first step; but picking the problem that is the match for your abilities is crucial if you are to succeed.
(Of course, abilities can change, if you are truly passionate.)