Mad at me - mad at him

Today was like a return from the old days. Son not following through on his part. Life is better when I stick to my boundaries.  I am so mad at him for taking me for a fool.  Although he's made some strides - getting up in the morning for work, and making it to work early - applying for his temporary license - and he had been (except for the last 3 days) following through on his chores - I made the mistake of easing up a bit and. Glad I have this journal to vent on.
He just started his job so I've been "paying him" in cigarettes for helping out around the house. I have been buying him cigarettes the last few days and he's only do a chore here or there. Says he'll do the lawn tomorrow. Keeps putting off his jobs but gets his cigarettes! He's supposed to anyway but I felt for him. Not now. He has a way of manipulating and I have let him because I want us to be at peace. Things have been pretty good so I guess I shouldn't expect perfection..... just frustrated. This latest incident reminds me that he is still way behind in the maturity area. 21 going on 12.  
I know it was a minor thing in the grand scheme of things but it hurts that he can be so disrespectful. This last incident reminded me so much of the old days. Sure he's still using - not the hard stuff anymore - but this taking off and not doing what he's supposed to ....... arghh. How important is it?  I need to readjust myself and remember I need to stick to my boundaries because he's not doing his part.