Tired… Why do most women think men should do all the work? Since Vegas… it’s just a game to me, you are not qualifying me… I am qualifying you… I’m the one who can walk away at any moment.
With this mindset you are in control, and when you walk away and approach another set, she is the one missing out and you still have the upper hand. 
-DJ
I generally stop eating peyote about 6-8 hours before bedtime. Maybe this tactic would serve you as well.
“I…can’t control you…you…can’t control me…I can’t control you…You’re not the one for me, no…”
Be without expectation, or attachment, and simply enjoy. If you do not enjoy, move on. Be without need to impress. Be without need at all. Be unconcerned with others think of you or your actions. Do as you please, but harm none if possible. Be in balance, and at peace. Be in tune with your surroundings. Be attentive and observant, be aware and actively involved in responding appropriately towards your desired outcome. Touch where and when and how is best… be that her mind, her heart, her skin… and live fully in the moment.
Do these things, and you will succeed regardless of what happens.