This quote has been repeated by many great leaders. Re-written and improved over hundreds of years.
If someone shows you something amazing and a way to improve your life by assisting you with a certain goal and you get all excited at first, but then you think of all the so called reservations, to-do-list type stuff and say "oh I have to wait till I do this or get this done", then most likely, you will never reach that life improving goal.
Is this you?