The most important thing in life is to stop saying 'I wish' and start saying 'I will.' Consider nothing impossible, then treat possibilities as probabilities.
As the gardener, by severe pruning, forces the sap of the tree into one or two vigorous limbs, so should you stop off your miscellaneous activity and concentrate your force on one or a few points.
One only gets to the top rung on the ladder by steadily climbing up one at a time, and suddenly, all sorts of powers, all sorts of abilities which you thought never belonged to you - suddenly become within your own possibility and you think, 'Well, I'll have a go, too.'