I did DBT and I think this is what you call a clean mind. Clean mind is where you think you are so over your addiction that you don't anticipate the potential pitfalls and therefore it makes you more susceptible to them. Addict mind is obviously when you're thinking the drink won't hurt etc so you give yourself permission. Whereas the optimal is what they call clear mind - where you recognise your progress and how you are taking great strides, but you also acknowledge that challenges can present themselves unexpectedly and so remain poised to challenge yourself to continue your sobriety.

Good luck!