Even though it seems like more of the same, I am going about it in subtly different ways, paying more attention (something she used to complain about; I would be touching her and paying attention to something else) to what I was doing and in general being more sensual about it.
And this is exactly what I mean too, lol. I think this kind of thing is VERY important and I think you'll really "get" PM (by Schnarch). I could do without some of the religious undertones, but it is good stuff.
I haven't look at it, but there might be some good stuff here and you may be able to see whether you like the approach... Passionate Marriage website library