One of the principles I use with treating chronic pain is exposure therapy. This involves doing the very things that cause pain. If we can learn to do these things from a different mental perspective (move from it’s damaging to it’s not harmful), we can retrain the brain’s response to a trigger.
In this study, people who had more low back pain when they stood actually improved over time with more standing time at work. From the conclusion: “Many people are standing-intolerant due to low back pain (LBP). This lab and field-based study showed some benefits from structured approaches to gradually progress standing time when transitioning to standing work. Using a sit-stand desk for 12 weeks resulted in decreased LBP and sitting time in standing-intolerant people.”