When did you?

I had a chance to go down to the states for a buddy's MBA graduation, it was a great chance to get away...

During the prolonged ceremony and between speeches, I found myself wondering outside of the theatre. In the hall way, there were two kids running around at full speed, chasing each other. An attendent went over and asked them to walk instead of running. Of course, her request was promptly ignored.

But...

When did you learn to walk instead of running?
When did you learn to cry instead of laughing?
When did you learn to lie instead of telling the truth?
When did you learn to walk away instead of fighting?
When did you learn to let go instead of holding on?
When did you start clapping instead of jumping for joy?
When did you start talking instead of listening?
When did you start to be dissatisfied instead of being contented?
When did you learn to hate instead of to love?

When did you start to walk instead of running?