At first your anger runs hot like lava, but then it cools and solidifies like obsidian, sharper than steel and cool to the touch. You will learn to wield it when you want to, instead of letting the anger rule you. There will be new lava eruptions periodically, but you will find you know how to respond to them, even though the impact may come all unexpected. You will have episodes of righteous flaming indignation and table pounding, and you will have episodes of zen-like meta-blaming filled with sympathy (and empathy) for your fellow victims of the P.
It helps to remember that your friends are also oppressed by the patriarchy. It helps to remember that you, too, were once oblivious to the P. You can destroy your friends' illusions about the P with a thousand tiny cuts instead of a stick of dynamite. Have patience. Choose which relationships are beneficial to your mental and emotional health. Better to have a few allies than to drown in an ocean of acquaintances.