And no one really knows what's on the other side of the corner.
Experienced runners know that the finish line is just the beginning of even more challenges.
The reason I'm stuck on this metaphor is that for the past three months, I've been training to run a 26-mile marathon in Dublin, Ireland, a benefit to raise money for the Arthritis Foundation. It's the most difficult thing I ever had to do, even more difficult than launching my own business. Training for a marathon takes you on incredible highs but also leaves you with very low lows, not unlike running a startup. I knew I was behind in the training, and to date, the longest I had traveled was 14 miles. I knew I had to do 20.