Mine are "3 years."
As in, it would take me 3 years to get back to where I am today. And that's a "best case scenario."
If I drink today, it won't be for just today. I'll drink the next day, and the day after that... it will take me about a year of drinking before I get myself back into treatment, if at all. And then so many months in treatment (last stretch was 5 months in rehab) followed by several months in a sober/halfway house, etc.
And like I said, best case scenario. If I drink today, and then everything follows perfectly, 3 years. It's more likely that it would take longer, plus the added bonus of me possibly dieing while trying.
One drink today and *POOF*, 3 years (minimum) are gone just like that. I don't have 3 years.