Usually LD means Low Desire or Lower Desire, referring to the partner who wants sex less than the HD (high or higher) desire person. Rarely on this board you'll see LL and HL for Low or High Libido.
The SSM book is good for "just do it" suggestions, and these can be very helpful. And yes, this will take time... do you have other plans? Emotional growth is an ongoing process that takes our whole lives right up until the moment we breathe out last breath. This is the place you are growing now. If you leave him, you will be growing (and struggling) someplace else. That is the nature of life: we grow, experience joy, have setbacks, have fun, get sad, make progress, backslide into despair, recover our optimism, and so on WHEREVER we are. It's your choice where you do that. Right now you're doing it here.
If you move on and your issues re sex are unresolved, it's very likely you will attract a partner who will present you with the very same issues, so you might as well work on them here.
Alas, it's not like you can just get on a bus and ride to the next stop where things will be just the way you like them. It's a process.
I wish Mrs. NOP would chime in. Some of your issues may be familiar to her, although in their marriage, her H was always the HD one. In yours, both of you seem to be LD, but I suspect your H's LD is more situational.
Just keep on being kind to yourself (and to your H). That's never the wrong thing to do.
