To concentrate implies bringing all your energy to focus on a certain point; but thought wanders away... Whereas attention has no control, no concentration. It is complete attention, which means giving all your energy, the energy of the brain, your heart, everything, to attending.
The moment you venture out, something takes place in you and about you. Life comes to your aid in various ways. You may not like the form in which it comes to you - it may be misery, struggle, starvation - but when you invite life, things begin to happen.
It is man's pretence that because he has choice he is free. Freedom is pure observation without direction, without fear of punishment and reward. Freedom is without motive; freedom is not at the end of the evolution of man but lies in the first step of his existence.