John F.Kennedy gave probably the greatest inauguration speech ever that first time, but I guarantee you when he first walked out there he was thinking, "Goodness gracious this is big and I better be up to the task."
No one can go back, but everyone can go forward. And tommorow, when the Sun rises, all you will have to say to yourself is: I am going to think of this day as the first day of my life.
In a race, the quickest runner can never overtake the slowest, since the pursuer must first reach the point whence the pursued started, so that the slower must always hold a lead.