Question : posture issue -- standing up straight

I wanted to know how to correct my posture.  I've gone to the doctors and they mentioned that my spine is properly set; however, I just tend to slouch.  I purchased this product about 5 years ago and since then, I've yet to buy another, but now it's time to buy another posture correction device.  This is what I presently have:

http://www.amazon.com/Florida-Orthopedics-Soft-Form-Posture/dp/B0011XP1IQ

I wanted to know if someone could recommend an alternative posture brace?

Answer : posture issue -- standing up straight

Excercise back and shoulder muscles om machines in gym

Straighten your back, roll your shoulders back, then relax. You will settle momentarily into the correct posture. Repeat this on a regular basis at work. Part of this is training yourself to reamin aware that you are slouching....