Hi there. I'm glad to hear you're back iin the game. It's a great place to be!
As far as gaining weight due to added muscle, it takes months and months of strength training to gain muscle. I'm not quite sure though if you WERE asking why you've gone up in weight, because if you're asking, well, I kinda think you may have answered your own question when you said "
I'm trying to eat less, but it's not working, I'll continue to work on my eating because it's bad! So at least you know what's going on and what to do about it - you ARE back in the game, afterall (yay!). 6 lbs is really, really not that bad at all. You've got the right attitude and those 6 lbs will be gone in no time, plus more! Good luck to you, with the weight and the smoking.