I conceive that pleasures are to be avoid if greater pains be the consequence, and pains to be coveted that will terminate in greater pleasures.
Michel de Montaigne, Awaken the Giant Within by Anthony Robbins, p 66
Only partially through the Tony Robbins book, but this seems to be his recommendation as to the best way to change behavior: By creating pain, where pleasure used to be. And to be sure to think long-term, not short-term. Tony Robbins points out, correctly, that sometime short-term pleasures, actually cause longer-term problems. I wish I had read this book back when he wrote it.