What is "impossible" is a shared agreement.
How many times has someone told you, "you can't do that?" What about "that will never happen." It's enough motivation for any of us to want to prove them wrong.
How many times have people been wrong about what they thought would never happen?
On May 6, 1954 Roger Bannister, a 25-year-old medical student broke the four-minute-mile (3 minutes, 59.4 seconds to be exact). The "experts" said it was impossible. People thought you would die if you tried.
Within 46 days, Roger Bannister's record was broken by another runner. By the end of 1957, 16 runners had ran sub-four-minute-miles. To date, more than 1,000 runners have run sub four-minute-miles, accomplishing it an astonishing 4,700+ times.
Well, it's February. How are your new year's resolutions coming along? Have you gotten committed yet?
The difference between impossible and possible is often how many times you try.
Remember, nothing is impossible unless you say it is.