I relate!
One thing I've been doing recently is notice every time I prioritize finishing a work project over time with my kids, and make sure time with my kids is also playing - pretending to be "Ghosty, Gobby, and Ariel" and wrestling and stuff not just taking care of them....
I grieve the loss of playing, exploring, experimenting and having dangerous fun as a kid in a neighborhood. We learned so much, made friends, survived without supervision, water bottles and phones and we are better for it....
I'm almost shaking-quivering with excitement here, and I have to try to say something, but there's no really good way to say it. So here's the bad/incomplete/short version:
Play more with your imagination, it's fun!
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Let's start small.
Imagine you have a box in your hands....