No fathers or mothers think their own children ugly; and this self-deceit is yet stronger with respect to the offspring of the mind.

You cannot see your own work at anything like its real size. Whatever you made carries the memory of what it took to make, and that memory sits on top of the thing itself where nobody else can see it. This is strongest with ideas, plans and writing, where there is nothing physical to check you.

Before you defend a piece of your own thinking, get one person who owes you nothing to tell you where it is weak. Ask for the weakest part specifically, since people will not volunteer it. Then sit with the answer for a day before replying.