All the bubble bath and mb talk aside part of "nurturing yourself" includes the social/relational aspect. If Mrs. HD isn't going to be a positive part of your social milieu you gotta get some friends or spend more time with the one's you have.
As far as the solo stuff goes I have to say that Cemar has a point. The satisfaction of that only goes so far. Sometimes when I mb I only succeed in getting myself more heated up for H. Sometimes when I mb I can't even get myself off because it isn't what I really want.
In your HH if you decide to make the art of self pleasuring more a part of nurturing yourself I suggest that you do so in an obvious fashion. Make a little "pleasure basket" for yourself with scented candle, magazines, lube, toys or whatever turns you on. Did you see the movie "the 40yo Virgin" - there is a scene where he gets ready to mb to porn and gets a shower, puts on clean white, startched jammies, lights candles and climbs into the beautifully made bed with the remote in order to view his friend's collection of pornography. It was a hysterical scene. However, the point that mb doesn't need to be a hidden, furtive, apologetic activity. While I wouldn't put it in Mrs. HD's face I wouldn't hide it either. One evening after the kids are in bed and Mrs. HD is ensconced in some "don't bother me, I'm busy" activity simply retire to bed, lock your door and take care of things. Unlock the door when you are done. If she comes up and notices the locked door simply explain that you didn't want the kids to walk in on accident and since she doesn't seem inclined to have a joint sl you were ensuring your own privacy and enjoyment. See what your C has to say about that. Believe me, I have considered doing the same. However, in my HH I have considered leaving the door unlocked, hoping that H would walk in and finally see me as a sexual being not just wifey/mommy.
Anywhoo HD, regardless of how you handle things with the solo stuff I wanted to be sure and make the social point. Join a running club, biking club, learn to golf and make golf dates, book club, whatever. Put the money for the activity into the budget. You bring home the bacon too.