Walk a mile...

While trying to find the origins of the "life is like an ashtray, it is full of little doubts", I searched for the quote by Billy Connolly as I seem to recall him using it.
I didn't find that specific quote but a few others did pop up. I quite like this one -

Before you judge a man, walk a mile in his shoes. After that, who cares? ...He's a mile away and you've got his shoes.