Quote from Barney in Where Were We?
Barney: So he stays home all the time not getting laid? No, see, that's what you do when you have a fiancée. He should be down here celebrating. He's free. He got that red-head-tumor removed.
Ted: You should write and illustrate children's books.
Barney: You know what Marshall needs to do? He needs to stop being sad. When I get sad, I stop being sad and be awesome instead. True story.