I'm shit at chess, and while it's never been a huge ambition of mine to be better, I liked the insights this article provides into *how* one gets good.
I spent a couple of fruitless hours on this the other day, when really, I just should have googled for it. (The problem I didn't crack was getting a recent enough version of node/npm onto the Pi.)
This looks like a pretty interesting idea – get exact ingredients you need for 3-5 reasonably healthy-looking meals delivered, along with recipes. Might have to give this a go…