persist ...

‎"Between you and every goal that you wish to achieve, there is a series of obstacles, and the bigger the goal, the bigger the obstacles. Your decision to be, have and do something out of the ordinary entails facing difficulties and challenges that are out of the ordinary as well. Sometimes your greatest asset is simply your ability to stay with it longer than anyone else." - Brian Tracy

believe ...

"I've always thought you've got to believe in luck to get it." — Victoria Holt

keep moving ...

“Life is like a bicycle, to keep your balance you must keep moving.” - Albert Einstein

you never know ...

"The thing that's important to know is that you never know. You're always sort of feeling your way."

— Diane Arbus