My advice would be to emphasise the 'mind like water' concept.
I am a single (widowed) mother of 3 adult (but still at home) children and I know I would often let my frustration with my life and my responsibilities interfere in my interaction with my children. I find I am now able to appreciate each child more and actually listen to them as I am confident that all the other 'stuff' has been captured in the GTD system. I feel more in control and definitely calmer and not as distracted.