I've been in the stock market more or less since 1999 (never traded forex), and one major thing I've learned is that the more active trading I do, the more I lose.  I'm just not that good at it, plus transaction fees eat away at profits.  I've become a buy-and-hold investor in the stock market and in crypto as well.

I've never done that either, and I'm not sure what a trading journal is supposed to accomplish.  We're in the age where all your trades are compiled and at your fingertips in a heartbeat.  I do see the benefits of keeping a journal in general, for thoughts about things and so forth (and I do this, but not to benefit myself in trading), but I'm not sure how it helps traders.

From the little crypto trading I've done, I have learned that you have to be patient, even when the market swings in the opposite direction than where you want it to go.  There were quite a few sell orders I could have had filled successfully if I'd just given it more time.  For me, it's best to place an order and then kind of walk away from it for a while...but that's something I have a very hard time doing, which is why I don't trade all that much.