How can you make your truck ride smoother?

Lower your tire pressure change your shocks bilstiens or monroe alignment road force balance tires put at least 150 lbs of weight in the center of your bed between wheel wells help keeps axle and rear tires grounded without sacraficing gas mileage or feeling more drag in the rear change out old suspension parts with new ones loosen and retorque all suspension componets to proper torque value you can bag the rear but I don't like the drill in frame idea changing out old pads and rotors made my truck role smoother went 120 and I roasted the brake pad and rotor and that's all I have to say about that