I am not talking about taking a walk and change your diet.
I read that low sex drive is caused by low levels of zinc. Maybe you should try taking some zinc, or eating foods rich in zinc.
You should also try Keegle exercises (tensing your vaginal muscles)...they "wake" you up and make you a little more sensitive, especially if you do continuous reps.
Also, try to remember what made you in the mood before. Sometimes a good snuggle and making the first move makes you want to even more.