Get the spring code from the door sticker and post it here. I suspect you might have a snow-plow prep package, or heavy-service suspension package.

If they are a heavier front spring, you might get some relief with a softer front spring.

It all depends on what you mean by "rough". When you hit a bump, does the truck jump up? Or does it just vibrate the whole truck? If it's just vibration, shocks will help that a lot. If the truck actually jumps up quick, that's the springs being too stiff.

Tire pressure helps a lot too