Tip # 1: Find a chair that is supportive with firm seat surface. Overly cushioned seating is
part of the problem: It encourages your body to sink down, and does not allow you to feel your sitting bones grounded on the chair.
Tip # 2: Adjust the height of your chair, so that your feet are firmly on the floor. There is a lot of unnecessary muscular work involved in sitting when you don’t have firm contact with the floor.
Tip # 3: Take a look at a model skeleton, or find an image of the spine and pelvis online, to get a clear visual before you start exploring.