I've read a great many things on the subject of lessons that can be learned from mindful practices, but this piece by Marley Flueger is easily one of my favourites:
The secret of yoga isn’t in the deepest backbend. It’s not in the perfect downward dog. There’s no secret in the longest-held “ohm.” The secret of yoga is in the things you teach yourself through repeated visits to your mat. It’s the practice of uncovering the wisdom of your soul.
Here are a few lessons you can learn if you show up and listen closely...
Seriously, do yourself a favour and read the whole thing.