Try to learn to breathe deeply, really to taste food when you eat, and when you sleep, really to sleep. Try as much as possible to be wholly alive with all your might, and when you laugh, laugh like hell. And when you get angry, get good and angry. Try to be alive. You will be dead soon enough.
Have sex. Have dirty, raunchy sex. Have sex in the bed, on the counter, in the car, in the bathroom. Have it everywhere. Have passionate love making sex. Fuck. Go slow. Gaze into their eyes. Learn every curve and bump on their body. Learn what makes them quiver. Learn what makes them cum the hardest. Feel their body and fall back in love with them. Just have sex.