It is always up to the male to get his partner in the mood. Hopefully this partner is of the opposite sex. The reason it is up to the male is because the female lacks hormones. This is why the male is always a horny bugger. 

Here are some suggestions that always work except for the times that they fail:

When you come home from work, present her with a bouquet of flowers. Kiss her on the cheek and whisper softly how much you love her. You are now halfway to paradise. The bases are loaded and you are up to bat. As painful as it might be, make sure your television remote control is not in your hands. This is a definite turnoff for all women.  Ask her how her day was, and make sure for once in your life you LISTEN to her. (Even if she whines and bitches for an hour.) 

Remember to occasionally nod your head in agreement with whatever she says. When her lips stop flapping in the wind, take her by the hand and gently shove her into the bedroom. Sit with her on the edge of the bed and remember not to belch or fart. As she slowly disrobes, make sure you do not say anything to her. If you said something like “You look so beautiful today”, she would say “What do you mean, I look so beautiful TODAY!??"

Massage every inch of her body (or whatever the hell you can get away with...) When the coast is clear, you may take off your clothes. If she laughs at your manhood, this is not a good sign. 

If after two or three minutes of foreplay you are still not getting anywhere, you will probably need to use the vibrator underneath her pillow (for her, not you...)

That's all there is to it!