In Chinese, there are 2 words for "regret".

後悔 hòu huǐ is the regret of things I did: e.g. I regret drinking that much.

遺憾 yí hàn is the regret of things I didn't do: e.g. I regret not asking her to dance.

Which do you have more of on your anti-regret list? Spending time with kids sounds much more like 遺憾 yí hàn.