Cara Delevingne has taken control of her life — and she couldn’t be happier! The supermodel, 31, opened up about her decision to completely stop drinking alcohol after her battle with substance abuse overtook her. “I used to think drugs and alcohol helped me cope,” she explained in a recent interview. “But they didn’t, they kept me sad and super depressed. I feel like I’ve got my power back and I’m not being controlled by other things.” Delevingne admitted the infamous photos of her acting erratically in an airport in 2022 made her turn everything around. “Listen, I signed up for this, this is…