There is Recovery, and there is recovery. What I mean is that you will heal enough to be back to most of your normal life activities within 6 or 8 weeks, including driving, household chores, self-care, etc. At this point, unless someone sees your scars, they will likely not be able to tell that you had heart surgery. You will probably feel very good, to a point. The point is that you will not have your full strength and exercise/work tolerance back for quite a while after that 6-8 week mark.
I was back to work part time at 6 weeks, full time at 8 (office job). I started cardiac rehab at 12 weeks, and at that point I couldn't do much more than "be there." By the end of the 12-week course, I was doing almost as much exercise as I had been doing in the year or two prior to surgery. I thought "well, this is as good as it gets." I was wrong. Over the next year or so, I continued to heal and feel better and stronger. For me, the moral of the story is that I felt almost "normal" at 12 weeks or so, but I continued to improve and feel even stronger/better for a long while after. Life is good.