Got any negative associations knocking around in your mind no matter how much you consciously disagree with them? Try this simple trick:
Every time you “hear” a negative memory or association or feedback loop in your mind, just consciously apply each the 3 D’s to it: first Distance yourself from it, then Disrupt it with your will, and then Discredit it with reason.
And remember: Your past may indeed inform your future, but it doesn’t determine it!