Sufferer of tight, achy neck & upper trap. usually when stressed. what types of exercise are best to strengthen those areas & alleviate tension/pain?

Neck and shoulder: neck and shoulder rolls and stretches can be very helpful. Doing resistance exercises for the neck and shoulders with either exercise band for the neck and/or weight for the shoulders can help strengthen these muscles. Relaxation and deep breathing exercises can help with stress and anxiety. http://www.self.com/fitness/2015/02/stretches-relieve-sore-neck-sitting-all-day/