hopeful, concentrate of living your own life and let his recovery be his own business. Once you start fussing, monitoring or over thinking how you should behave you're showing a lack of faith in his ability to deal with it himself.
Have confidence in him, until he shows you otherwise and let him get on with it. As for the issues of resentment about the past, if he remains sober you may be able to do some couples counselling to clear the air.