Sometimes you have to flip the table in order to gain a seat at it.

That’s why instead of working this Wednesday, I’ll be attending and speaking at the rally for A Day Without a Woman in San Francisco. I’ve given the sole employee of my agency the day off. And like many people all over the world, I won’t buy anything that day either.

Why am I doing this? The #GrabYourWallet movement has shown me that the most powerful lever for change women have is our economic might. While things may be neck-in-neck at the polls in America, it’s different at the cash register. Women drive between 70 to 85 percent of all consumer purchases and generate two thirds of the nation’s economic activity.

That isn’t just power. It’s hard power. It’s power that can move entire markets and cultures.

It’s why companies have cut some financial ties with the most divisive political figure this country has ever seen. And it’s why retailers have dropped more than 3,600 products since the movement started, according to my site GrabYourWallet.org. Companies are now thinking twice before doing business with those who normalize disrespect and divisiveness. That’s progress.

This Wednesday, also International Women’s Day, we’ll keep going. Those of us who are able to refrain from working or buying anything – and I realize that’s not possible for everyone – will do so. We’ll reject a world in which women account for only 23% of senior U.S. business roles and about 20% of international parliamentary seats. We’ll reject a world that still pays women less, devalues women’s work, and excludes women from its most important decisions and conversations.

This Wednesday, the women of this world will opt out of the economy precisely because we now understand our own value within it. Instead of waiting for institutions to change, we will see those institutions begin to bow to a new commonwealth of compassion — one that puts a premium on peace, wisdom, and well being.

Get ready.