The late, great David Foster Wallace wrote a journalistic piece titled Big Red Son, in which he covers the 1998 AVN Awards. Therein he suggests a possible course of action to those who might otherwise consider autocastration 'by kitchen utensils and/or wire cutters'. You can find a PDF of the piece here
I also would like to reduce my sex drive, but not kill it completely. I'm hoping menopausa will help with that. I envy people who don't need sex.
I hate to tell you, but for a lot of women, desire increases after menopause. Although it may be due to other factors... Kids are on their own so you worry less (hopefully) You and your husband (if there is one) have better communication skills than in your youth. No worries about getting preggers, one less thing to stress about. You may have enough seniority in your company so that they treat you a little better: you have a happier workday. You meet someone exciting and new. On the other hand... If your body says "Yes, yes, yes", but your life says "No!", then that can be very frustrating indeed.
I don't have kids, haven't had to worry about getting pregnant for a long time, and have a very comfortable professional life. I even don't have periods. So, I think it can only go down with menopause. I'll wait and see.
Looks like you have got a lot going for you. Sexual tension comes and goes for all of us. It can be annoying when the desire is there and the ones I might have shared it with are long gone from my life. The feeling passes and I go back to living out the day. Can't say that there's really anything to do about it, ...except outlast the blues.
It sure is for those who happen to be asexuals LOL I know cos one of my best friends has been an asexual for most of his life. Until recent years, when it started to fade away into Gray-A territory.