Sometimes people say to me that what they do can't affect the whole planet's health so why should they even try? But if all us tried, well, that would make a big difference, right?

So the other day, I was standing at the crosswalk with quite a crowd. The sign said don't walk but there were gaps in the traffic and I was in a rush so I jogged across.

What I hadn't counted on was the fact that, seeing me step into the street, without checking the traffic or the don't walk sign, about five other people behind me stepped into the street, too. Just at that moment a car came and the result was the sudden squeal of brakes.

Someone could have got hit because I didn't realize that how I act affects how other people act.

What I do matters. It affects how other people act. The choices we make in life affects the choices of everyone else.