I have to self adjust the right side of my sacroiliac joint 4 - 6 times per day. I cannot sit without it moving out of place. I had to raise my desk at work and now have to stand all day. I already purchased Esther's book but was wondering about the chair. Do you think it will help me with my s.i. joint problem? Virtually every part of my life has been changed because of my s.i. joint. Will I be able to sit again using this chair? Thank you!