The true secret of giving advice is, after you have honestly given it, to be perfectly indifferent whether it is taken or not, and never persist in trying to set people right.
Advice is a dangerous gift, even from the wise to the wise, and all courses may run ill.
Advice to writers: Sometimes you just have to stop writing. Even before you begin.
It was a high counsel that I once heard given to a young person, - always do what you are afraid to do.