We can compare the law of attraction to liquids of different densities. Pour water, olive oil and petrol into the same jar and stir them as much as you like.
Because their densities — or, in law-of-attraction terms, their frequencies — are different, each liquid’s particles will still attract the particles that match them, the ones of the same density (frequency).
While the liquids attract the particles that match them, they don’t think about how to do it. Everything is arranged by the universe, within universal laws.
In short, that’s what the law of attraction is. When you change who you are, the reality you belong to has to change. What matters is who you choose to be. And that is entirely your freedom in the school of experience called life!