Naz
You make some interesting points - but the key one for me is the point about being quick to take a trade and quick to take a stop, and to me that is about the most important part of trading that anyone can learn - and in particular - quick to take a stop - but at the right level - a wrongly executed stop is as bad not taking the a stop - only execute stops at the correct level
and i believe you can only learn that through full time trading, no one can teach it to you and paper trading will never teach you - even trading small size won't teach you - your mistakes have to hurt - so you learn - and in fact all your stupid non-disciplined trades do hurt - the ones which are just losses are the least costly - in terms of your wallet and brain ache
sitting next to city traders must have shown you that there are all sorts of traders, and i assume you mean banks as opposed to pure trading companies in the uk ( most of which only scalp bonds) , and at the banks, some traders end up being there just to make the room look busy to impress a big investment customer, a lot of traders just end up front running those same customers orders to make some nice free money for the bank, some just provide liquidity in a promoted company, and a lot just arbitrage postions and very very few trade outright positions, or even scalp.
the "experts" on TV are a whole other subject! not really worth going into - although there are a few who i really respect
i dont think the Nasdaq trader u mentioned was a "trader" - he took a few lucky positions that worked out - and thats a 50/50 call - but when he tried to trade full time - he learned the same thing people learn in a casino - if you cant move the odds your way, no matter how much you win in the beginning - in the end - you will lose - but if the wins got him interested in trading, if he keeps trading and has the right mentality, he might turn luck into skill
I have never been on a course, but those who i have chatted to, who have been on a course, seem to say the same thing - he was a really nice guy who gave the course and he said some really interesting things - but if the students are then asked if they are now trading profitiably - the answer is always - no - but none seem to begrudge the money they have "lost" and i wonder if that might show something about whether they will become traders or not - since it is controlling and understanding your losses that make u successful
once someone becomes a trainer, they are not a trader, they become a sales person, and they are selling their courses, and in trading there are some great tricks you can amaze people with - from candlestick patterns, to fibonacci, gann, trend line channels or studies such as rsi, or stochastics - to even the humble sma - but it is also hind sight, and at the end of the day, these are clever party tricks - but do not teach anyone to trade - that is when and when not to take a trade and how to end up with a positive p&l ( trading profit less trading loss and commision).
All there is to learn is out there in books, which you can read for free at the library or any bookstore with a good return policy - and there is a lot there you can learn - but not one book tells you when to take a trade and how to make a profit - and the reason might be the old saying " those who can, do, those who can't, teach"
I suspect that the people you mentioned who had a recognisable style, did know that they were onto something, but did not want to make a big deal about it, in the same way - a magician does not reveal his secrets
I repeat, paper trading - is worth the paper it is written on - and if you bet too little, you will never focus. Maybe you have to blow out your first lump of money to really learn - most have - but with learning comes experience and the money you can make when u really get it right -is so great, it wipes out any lossess a milliion fold
Analysing all trades is key, and as you said, in particular losses. Find out, was it the right trade and therefore an acceptable loss, or was it taken for the wrong reasons.
The key to trading is to keep going, and to learn through your mistakes - you dont learn to be a brain surgeon part time - and a lot of brain surgeons want to be traders - so they can make more and easier money - and they fail, because they think they can learn to trade part time or in a hurry - but i never heard of a trader who wanted to be a brain surgeon, because trading is the best occupation in the universe!