My wife asked me an interesting question the other day - "How does your Zen practice affect your real life?"
Putting aside any Zennish navel-gazing about the meaning of "real" - I think we all know what she meant by the word - it is a fundamental question. No point doing it unless it has some positive affect.
To be honest, she asked because my job has been difficult for a while and so I've very much not been floating around smiling serenely like the Dalai Lama. Thus the only honest answer I could give was, "It makes me less of an arse than I would be without it."
What about you? How does your Zen practice affect your real life?