#1 is sun
I can control estrogen for 2-3 days with just 30mins of sunshine.
Not even 8hrs of incandescent light can do this in my experience.
Light increases progesterone keeping its ratio to estrogen in check and Vitamin D produced from exposure to sunlight can assist opposing estrogen.
I don't think the sun's anti-stress effect is fully understood. Potency implies that there's more to it.
#2 clean gut
Less poison from food and bacterial activity. Thus, lower serotonin and estrogen. Better detoxification function.
#3 Vitamin E
It's potent. Two drops around on nipples can take care of estrogen for few hours. Large doses can take care of it for a day or two.
#4 good sleep
Those folks stuck in the hamster wheel of life know the difference between a full-night rest and a bedtime quickie.
I've seen little anti-estrogenic effects from other fat-souble vitamins and aspirin. I don't see them as part of an affective standalone therapy. Ceproheptadine is defintely more effective (by loweing histamine and sertonin) but I haven't tried it in large doses to judge.
Although Ray suggests that Naringenin works as an AI, I think fibre in OJ can offset this action by overfeeding bacteria.
Progestrone in excess can be problematic, especially for men. Unlike the sun it doesn't increase testosterone ruling it out as a main therapy method.
Carrot salad I think is good as a maintenance strategy but more powerful cleansing might be required in some cases.
The best strategy would be to tune in to how one feels when there's extra estrogen. Using light or some vitamin E at the first sign of an estrogen surge could smooth the overall pattern of stress induced by excess estrogen overtime. Adequate sleep and recovery from daily stressors allow for better capacity to handle stress. Building systematic health gradually like people suggested here is a better idea compared to trying something more dramatic.
Which type of Vitamin E do you use?
I've tried alpha tocopherol with mixed tocopherols, 400 IU in oil, and also "dry E" (tocopheryl succinate), and ironically they all seemed to increase a few estrogenic symptoms