Here are some motivational quotes about hard work that I found:

- "Successful people are not gifted; they just work hard, then succeed on purpose." — G.K. Nielson
- "Success isn't always about greatness. It's about consistency. Consistent hard work leads to success. Greatness will come." — Dwayne Johnson
- "Do the hard jobs first. The easy jobs will take care of themselves." — Dale Carnegie
- "Hard work beats talent when talent doesn’t work hard." — Tim Notke
- "A dream does not become reality through magic; it takes sweat, determination and hard work." — Colin Powell

I hope these quotes help you stay motivated! Let me know if you need anything else.