You are focusing on him a lot in this situation. Your husband told you he was in the process of quitting. You found an empty vodka bottle and it makes you feel deceived. The most important thing here is that you're not happy. How can you change that? Here's a hint: it has nothing to do with your husband. Alanon and therapy are very helpful in returning your focus back to you and your kids. There is a saying here that I like I lot, "don't just do something, stand there." Instead of initiating a separation you could instead start to shift your focus on what you want for you and your kids. Baby steps.