I have a few personal favourite motivational speakers that frequently go back to listen to their audio books or videos.
One of those mentors are Eric Thomas...the Hip-hop speaker.
He has the following well known saying :
When you want to succeed as bad as you want to breathe, then you'll be successful.
Even though that was probably the most memorable saying of that whole speech there is another one in there that motivate me even more.
All men are created equal, some work harder in pre-season.
Go take this day and all the others following, and give it your all and following your dreams...you only have one life and one chance.
In the video below he explain the whole "story" about this saying.
All the credit for the video to Eric Thomas himself and the owner of the video.