I generally like to watch documentaries and particularly sports documentaries offer interesting parallells with trading as both are performance based activities. The last I recall is the Grand Slam documentary series on Netflix. I was surprised to see how important inner game was in the game of tennis.
You could have players who was on top of the world at the start of a match completely lose their confidence to the point where they could barely hit the ball. You could literally see it in their face. The face of defeat.
The highs and lows of trading can be extreme.
If you're a discretionary trader psychological issues definitely matter. If you're a mechanical/systematic trader it shouldn't.
I'm a semi-discretionary trader meaning I have a base methodology based on statistical data, but ultimately, I decide when and where to place trades. I have tried and keep trying to make it completely mechanical, but it's difficult.
My own issues:
- Impatience and FOMO. Not waiting for the very high probability entries where your loss can be small and the potential gain big. I honestly believe that being very selective can make the difference between a winning and losing trader.
- Trading without an edge. Yes, I believe I have an edge, but there are also times where it's not clear to me where the market is going. Obviously. Yet, I can still place trades during these times. The solution appears simple enough, yet not always easy to implement.
- Greed (typically letting a larger unrealized win go back to even trying to hit a homerun). When I trade well, I will typically take profits at momentum peaks and rather re-enter on pullbacks or around the same spot if it seems no PB is happening.
- Over-confidence (typically comes after a good period where I start thinking trading is easy). This leads to both excessive risk taking and sloppy entries.
- Lack of focus and burnout. Trading is a performance based activity and if you're discretionary you can't sustain top performance infinitely. If you have other stuff in your life going on it will obviously affect you. The solution seems simple enough. Don't trade if you don't feel you're on top of your game. Of course, the urge to trade can overcome that at times.
- Desire/hope. I don't know how to properly explain this phenomenon, but it can definitely happen that there are times where I completely lose objectivity and just succumb to my desires or wishes for what the market should do as it would suit me best (by giving me an easy winner or way out).
I'm sure everyone have their own issues to work through. For example, I know some people who just can't seem to take risk or hold a trade for a big win. Issues I've never had or at least haven't had in a long, long time.
I think the first Market Wizards book and probably the rest as well had a lot of interesting stuff on psychology. But like Mr Muppet says - psychology can't transform a losing approach into a successful one. Obviously. But I'm sure it can make a difference if you have a valid approach.