TR,
I completely relate to your struggle. It is a much easier battle if you simply aren't looking at women. Not their faces, not their triceps, not their socks.
But there is permitted beauty everywhere. The beauty of nature, the sky, the clouds, the trees, the wind, water, gravity. The awesome planning of this planet. Dwell upon the awesomeness of nature and you will find Hashem. You will see Hashem in a loaf of bread that came forth from the dirt.
The symphony of nature. This is beauty. Not a woman of a certain age range that is destined to lose her attractiveness.
Alex