Pisces, your 86 days aren't lost. So you didn't make it this time to 90, big deal. It doesn't mean that there was no benefit. And it certainly does not mean that you're at day 1!
Remember what was in place when you were doing well, and get back to that. Quit beating yourself up over this. Forgive yourself, recommit to the process, and keep going.
The reason why you can't seem to stop is entirely based on how you defined your lapse. It could've been a mere lesson to learn, or it could lead you back to old habits. It's up to you how you define it.
You can do this- we all have relapsed at one point or other. It's not how often you fall, but how often you get back up.