A painful stiff neck can be caused by poor posture or emotional stress. There are some things you can do to improve your posture and reduce stress. Practice good posture. When you have good posture, your neck and head will have good alignment. If you have to shrug your shoulders or bend over because of work, the arc of your neck will be concave forward, which will make your neck muscles tired and sore. When sitting: In order to maintain good posture, please follow the following items: 1, when you sit will be your foot board flat on the floor or on a footstool, such as a telephone book, your knees should be slightly lower than your hips. 2, you can use a rolled cushion to help support your neck. 3, make sure your lower back is well supported, you can use a rolled up cushion or roll up a towel on your back. 4.Make sure your back and head have good support when driving, and don’t step on the pedal very hard to get. 5, avoid sitting too long or driving for too long, to often rest, to try to do the exercise recommended behind, at least once a day 6, when typing or reading to put your documents upright. When standing: When standing, please follow the following items: 1, when you walk or stand, try to look at the position of your ears, shoulders and hips from the side into a straight line. 2.If you will stand for a long time, put one of your feet on a lower footstool and often change your feet to reduce the pressure on your spine. 3, when you have to lower the body, maintain a straight back with knees bent. 4, when working to maintain the height of your eyes, you can use a ladder to avoid too high so that you have to struggle to go up or head back. Sleeping: When sleeping or resting, the following points can help you to wake up with a well-rested neck: 1, sleep or rest on a firm mattress. 2, avoid using too high pillows or lying prone, which can make the neck muscles cramp (pain). 3.In order to have a good alignment of the spine, lie on your side with your knees bent and a pillow in the middle or lie on your back and use a pillow under your knees. 4. Put a rolled-up cushion or pillow under the neck. Relieve stress: Emotional stress can arise from a variety of things, such as worrying about your job or family, or being angry, sad or scared because of something in your life, such stress can cause neck pain or muscle tightness, it can also make the damaged area become more painful. A walk away from the stress of work. 2, regular and adequate exercise. 3.Imagine yourself in the place you want to go or go on a short trip if you can. 4.Learn how to use their time. 5.Relax your neck and shoulder muscles with massage. 6.Talk to friends or counselors about their stress.