That extra paper towel you used in the office . Your two take away cups of coffee when you could have carried your travelling mug . Taking a taxi because public transport is not cool. Letting the computer run all night even though you don’t need it.
On the face of it they are all very small things which couldn’t make a difference. Put all of them together and they become big. Put them together with each one of us and they become humongous.
Is it still difficult making a choice? Every long journey begins with a small step. And you’re either in or you’re out; there’s no being in the middle.