You mention that you can trade without charts. For your trades in this journal, do you rely on data other than a simple price chart, i.e. you have some other source of data confirming your trades such as some limit order book?
I do however keep a journal of prices from different market open/closes, key levels through the previous weeks/days and prices I've seen before, constipated price ranges are my favourite to keep note of. It's a bit 'old fashioned' writing prices down, but it works for me.
"I made all my money by selling too soon"