Learning to laugh at Yourself: A panacea for the Doubters

It has been a grueling 2 days. I know majority of you wished you were elsewhere.
For 14 hours you talked, you discussed, you shared, you presented and you role-played. Never before your vocal chord was stretched to its very limit.
Was it time well spent or was it 2 days of regrets?

Take at least few minutes of your time to reflect and share with me your experience of that 2 days.