Bumpy ride/stiff shocks

Riding in my '02 feels like riding a rock, especially here in nyc where the roads are real bad. Is there afternarket shocks that are worth investing into so I can actually enjoy the ride. I'm new to this so please be gentle. Thanx to all.

my 2002 4 wheel drive rides great. have you checked your air pressure in the tires, maybe it is to stiff. we have had ours 1 year and has 40,000 miles. really like the 4 wheel independant suspension.