Mindless Snacking At Night

I read one of the other bloggers comments about late night mindless snacking and boy can I relate. I swear every day I tell myself today I'm not going to have any snacks after dinner and everyday I fail. I don't get it. I'm not bored or depressed or lonely or anything so what is the deal. Not to point fingers, but it seems like the only thing I can figure out is my husband. For the 6 months we were apart I hardly ever snacked at night. I might have a hand full of nuts or something but that was it. And now I eat crackers, cookies, chips, all stuff I know I shouldn't have yet I eat it anyways. I don't know how or if I should say anything to my husband. I'm not blaming him, I am an adult and my own person, but I know that if he wasn't snacking I wouldn't be. What do I do? I've been trying for weeks now to figure out why I'm snacking at night and this is the only thing that makes sense. I have no will power when it comes to having junk around the house and if I keep snacking I'm going to end up where I was which is NOT an option for me. I WILL NOT GO BACK. How do I deal with this? I can't expect everyone in my house to alter their eating because I'm weak. I got on the scale this morning and I was at 146, so it's not like the snacking is causing me to gain, but I know it will eventually. I just don't know what to do to make myself realize I am not a person who can just snack and snack and not have to pay!