Indeed, 500 is bad ass. All or most of the "trigger myths" have been debunked - seasonal, life, etc. If you havent experienced it without dip in 500 days, you know from the evidence that any thought about it being better, easier, less painful, more fun, etc with poison in your lip is a flat out a lie being told to you by a shadow of your past.
In fact, just the opposite is true. Now you can invest in the moment instead of looking ahead to that next lip full of dirt. Now you can really just be "there." I dont know how better to explain it. No more constant thinking about the next moment, or how to break free to get your fix. Your fix is whatever you are doing.
Congrats on 500, and trust me when I say it just keeps getting better.