I'm currently living on my own in a hotel for work. I'm sitting outside drinking some beers and smoking a couple cigarettes. My wife thinks I'm in bed sleeping and believes I gave up smoking years ago. I do this every time I travel for work.
Why do you drink beer and smoke cigarettes?
I don't know it's just something I do to keep me sane. It helps me deal with the loneliness.
Smoking cigarettes and drinking beer are a personal choice, but lying to your partner about them is something you should not do. Your partner expects you to be honest with them. Lying will potentially cause a lot of trouble in your marriage if your wife finds out about your lies.
I don't want to give them up.
Lying to your wife isn't the answer here. All that will do is sour your relationship.