Staying Positive Regardless is entirely in your hands. It's a choice. Your choice.
Constant vigilance will be needed at the start. As new neural pathways are being created in your brain, old, long-established ones will also be vying for your attention. Yet the less you give in to old self-defeating habits, those that give away your personal power, the less those old neural pathways will impinge upon your actions.
Give your new way of living the opportunity to grow and breathe - discover for yourself just of what you are capable. Nothing feels better than positively surprising oneself!