Meds killed my libido for years. I got them reduced and started Buspar and Klonopin. The reduction in anxiety also reduced my inhibitions...not unlike alcohol. So inhibitions play a part in sexual activity. Are you anxious?
Also what I did was (and I am serious) was to go to Bath and Body works and get the most sensual smelling lotion I could find. I got a whole set. I would take my time with my shower and then lather in the smell and focus on how sensual I smelled. I told myself I was a beautiful woman. Feeling beautiful is part of being sexual.
Next I began to read erotic literature. I found Literotica to be really nice. It was also quite something because I could read it anywhere and to me that felt just a tad naughty. There I could be anywhere, reading erotic literature and no one knew.
In time, my libido came back.
I don't know if any of these will work for you..there are other factors like resentments in a marriage, physical problems etc that can be part of the problem as well.

Good Luck!