Perhaps I got the best of my lessons from my friends of college times.
It does take time for message to actually sink in, and nor I realized its value for long. But I find it invaluable because, I keep coming back to it.
I was perceived to be of very studious nature but, somewhere during my college days, I started taking my studies in a very casual manner. I took a very casual approach because subject of studies did not interest me. It took me sometime but I surely did notice that there were amongst my friends who studied hard though subject of studies did not interest them either. They did because they felt it was their duty, to themselves, to do so at the time NOW
Not necessarily in so much words but message I got was:
It does not so much matter where you came from
It does not so much matter where you want to be
It does not so much matter what you are doing
We have the time NOW, only the time NOW
Give your best to the time NOW, because this precious moment taken from the finite collection of seconds of our life, never comes back. Time lost, is lost for forever