You don't lose if you get knocked down; you lose if you stay down.

Muhammad Ali

To conquer frustration, one must remain intensely focused on the outcome, not the obstacles.

T.F. Hodge

If we have a goal and a plan, and are willing to take risks and mistakes and work as a team, we can choose to do the hard thing.

Scott Kelly

Enthusiasm is common. Endurance is rare.

Angela Duckworth

The harder I work the more I live.

George Bernard Shaw

A menos que intentes hacer algo más allá de lo que ya dominas, nunca crecerás.

Ralph Waldo Emerson