See this post for the intro to this series of posts about rules.
RULE SIX: Nothing is a mistake. There’s no win and no fail, there’s only make.
Another of my favourites, both sobering and liberating. Accepting mistakes, confronting failures and moving on is the way to improve your work. It is not literally true as worded, but it is highly productive to accept the limitations of your work and either build upon that work or discard it and move on.
However, the key element to this rule is the “make” because if you don’t make you will neither win nor fail.