Everyone in my family could be described as inflexible - particularly when stressed.

I've had great improvement with

Transforming the Difficult Child Workbook: An Interactive Guide to The Nurtured Heart Approach by Lisa Bravo, Howard Glasser

I love making a big fuss when DS or DH does even the littlest flex and praising their flexibility. I like those irrefutable moments of strength - and lecture on and on about it, even when I see DS start to squirm.

Smiles,
Grinity