My data point turned six months recently. It was a fast six months, and it was a slow six months. Some days I would play with him, look at my watch, and somehow the whole day past, whereas other days, especially in the beginning when I had little clue as to what to do, I counted some very long minutes.
As you can imagine — and any parent can tell you this — my life changed the moment my son was born.
In what ways? I'm glad you asked, because I was curious about that, too. My dissertation was on personal data collection, so I have data that goes back to 2008. I downloaded that data, which I collected on and off over the years, and compared times before my son was born and after.