The deadly lie is to think that you can violate the sacred boundaries, that God has set, and in that violation you will find your fulfillment and find your happiness. It's simply not true. The fact that God has set those boundaries - and Chesterton once said "whenever you remove any fence, always pause long enough to ask why it was put there in the first place".
You see, as an apologist I'm asked what is the most emotionally laden question: "God and the problem of evil". Believe me. That is an easier question to answer than this one: As Chesterton said: "Meaninglessness does not come from being weary of pain. Meaninglessness comes from being weary of pleasure". So pleasure without God, without the sacred boundaries will actually leave you emptier than before. And this is biblical truth, this is experiencial truth: the loneliest people in the world are amongst the wealthiest and amongst the most famous who have found no boundaries in which to live. That's a fact I've seen again and again.