You're in recovery from an addiction.. first off, give yourself a break (no, not a smoke break... an emotional one)... recovery is HARD and is a lifelong process... I quit smoking years ago and it took a couple times to finally get it down. Each time I went back though, smoking actually got harder, grosser... the last time I quit it was basically cuz I couldn't stomach it anymore. It made me sick to my stomach to light up which made it a lot easier to quit... the major reason I went back though each time I had quit was usually stress related. If you can do ANYTHING to help alleviate stress without turning to such a harmful substance do... meditate, chant, sing, do yoga, take a walk, take a DEEP breath... read up on how your body will heal itself after not smoking for a while... look up pictures of blackened lungs to remind yourself of the damage that few people even know is happening to their bodies when they smoke.
Just know that it IS possible to continue recovery for the rest of your life, learn your triggers and seek help and support in your weak moments. Reach for a hug, not a cig. Recovery is hard when you're faced with the addiction... too bad there's not an anonymous program for smokers, but one could apply the principles of the 12 step program to kicking any addiction. When you're faced with the temptation, try to remove yourself or divert your attention.. get focused on something else.. have a time out in your room if you need.
Good luck and remember, not only will you be healthier but you'll be RICHER! LOL.. Cigs are EXPENSIVE.. at least around here..