You only have to solve two problems when going to the moon: first, how to get there; and second, how to get back. The key is don't leave until you have solved both problems.
Jim RohnThe best advice I ever came across on the subject of concentration is: Wherever you are, be there.
Jim RohnYou cannot speak that which you do not know. You cannot share that which you do not feel. You cannot translate that which you do not have. And you cannot give that which you do not possess. To give it and to share it, and for it to be effective, you first need to have it. Good communication starts with good preparation.
Jim Rohn