Almost every trading book and every experienced trader will tell you to keep a journal. Almost every new trader will start one, fill it out for two weeks and then just quietly stop. The problem isn't usually motivation. The problem is that the journal is either too fiddly to keep up with or it doesn't record the things that actually are going to help you improve. A good journal is simple, quick to complete and is built around the questions you're going to want to answer later on.

The reason a journal is so important is that memory is so very unreliable. After a few weeks you'll only remember the big winners and the big losers and completely forget all the ordinary trades in between. You'll also have a tendency to rework the story in your own favour, remembering that you adhered to your plan when in fact you moved your stop. A journal gives you a record that doesn't change so you can see what you actually did rather than what you think you did.

Start with the fundamentals for every trade. Date, ticker, long/short, entry, stop, target and exit price. Position size and amount at risk. Then work out the result in R (your profit or loss divided by the amount you risked). A trade that makes you twice your risk is a 2R trade, one that hits your stop is a 1R loss. R is useful as it allows you to compare trades fairly even if the position sizes were different.

The next layer is the reason for the trade. One or two sentences on the set up please. What pattern/level were you trading and why did you think it would work? What was the broader market and the sector doing at the time? That's important because when you look back you want to know whether the idea was good, not just whether the trade was successful. A good idea can lose and a bad idea can win and the journal is the way you work out which was which.

Then a quick note on execution. Did you follow your plan? Did you enter at your planned level or chase? Did you honour your stop? A simple yes or no is fine, with a brief explanation if it's a no. That's where a lot of the learning occurs as so many losses which we would have thought were just bad luck in fact come down to a step having been missed.

Emotional notes are the ones people tend to skip and they're actually some of the most useful. One line on how you felt going in and how you felt during the trade. Were you anxious? Bored? Overconfident? Rushed? After a few months you'll start to see the patterns. You might find that your worst trades are the ones that happen after a big win, or the ones that happen late in the day or when you're trying to make up for a loss earlier on.

Screenshots are a massive help. Take a screenshot of the chart at entry with your levels marked and another at exit. Looking at the actual chart is infinitely more useful than just being given a description of it. A lot of traders will keep these in a folder or a slide deck, or simply paste them into a spreadsheet alongside the trade.

As far as tools go, simple is best. A spreadsheet is more than adequate for the numbers. Some people will use a notes app or a dedicated journaling platform that pulls their trades directly from the broker. The ideal tool is the one you're actually going to open every day. If it takes you more than 5 minutes to log a trade then it's far too complicated and you'll simply not use it.

Data collection is only half the job though. The other half is the review. You need to set aside a chunk of time each week to go through your trades. Look at your win rate, your average winner, your average loser and your total R for the week. Then go through your notes and look for the same mistakes recurring. Once a month you can step back a little and sort your trades by setup type. You may find that one setup is carrying your results and one is just losing money and that will tell you precisely where to concentrate.

It also helps to tag your mistakes with short labels (chased entry, moved stop, ignored market trend, oversized etc). After a few trades you can then go through and work out which mistake you're making most often. Fixing your one most common mistake will usually have a far greater impact on your results than coming up with a new strategy.

One final point. Be honest and be kind to yourself. A journal is not a place to go and beat yourself up over losses. It's a tool for learning and the people who improve the fastest are the ones who treat their mistakes as information rather than as failures. Log every trade, the good ones and the bad ones (the embarrassing ones in particular) because it's those that are often the ones that teach you the most.