Poor posture is a problem that can lead to many musculoskeletal dysfunctions.
This video addresses how to improve your posture and recommends exercises that you can do to correct forward head posture.

Video Notes
0:00 : Intro
0:50 : What is posture
1:23 : Why is good posture important
2:00 : Awareness
2:52 : Stretch 1

If your job involves you sitting, see link below on how to sit correctly with good posture:
   • How to sit correctly with good posture  

See link below for exercises that can be done while in sitting:
   • Exercises you can do while sitting  

See link below for exercises to counteract against the effects of prolonged sitting :
   • Exercises for people who sit all day