This video breaks down the anatomy of sitting, and how to support the body effectively to sit comfortably for meditation or breath work. You'll learn modifications using props, so have handy 2-3 firm blankets, a chair, perhaps a yoga block or bolster. Once you get the idea, you can find household items to substitute.

The busy mind can be enough an obstacle for many people, we can eliminate at least some of the obstacles of practice by at least ensuring the body is at ease. Plus, these tips are excellent for sitting at a desk etc. May this leave you better than you are finding it!