To avoid making this mistake, set up a Ulysses Contract or a pre-commitment device. In Homer’s epic tale The Odyssey, Captain Ulysses knows his crew will be sailing past the enchanting Sirens. He’s heard about their captivating song, which causes sailors to redirect their ships and crash into their shores. Rather than depend on his own willpower, he makes a plan. He directs his crew to tie him to the mast of his ship so he can’t change course. He tells his sailors to put wax in their ears so they won’t be able to hear the song. He protects himself from temptation by making a plan in advance.