Diligence overcomes difficulties, sloth makes them.
“Have you something to do tomorrow; do it today.”
“If you have time don’t wait for time.”
“One today is worth two tomorrows.”
“Time enough always proves little enough.”
“You may delay, but time will not.”
“Never leave till tomorrow what you can do today.”
“Life wastes itself while we are preparing to live.”
“Never put off till tomorrow what you can do today.”