PG 4 months is awesome, working on the steps with a sponsor is even better.
Keep working those steps and APPLY them!!!
The more time sober, the more steps you work and the more steps you are applying to all areas of your life the better you will get at living life on lifes terms, at least that has been my experience.
Stick with it and you will find a joy even greater then you ever dreamed!!! I have found pure elation giving it away!!! My second sponsee and I went through the steps and he has over a year sober now, the sparkle in his eye and the smile on his face are priceless and all I did was share my ES&H taking him through the steps. A new sponsee and I will be working on step one tonight.