True. And I'd like to add a lack of professionalism as a reason? An observation not a criticism. I'd hope my (obv not actually 'my') surgeon or pilot didn't have a bad day every time they had issues at home.
Not saying it's easy, no one man band operation is easy, especially one run from home with no customers and no boss to keep you on the straight and narrow. Edges and psych are all well and good, and I'd guess Korattt has thought about them until his head is spinning like we all do, but they're no use if you can't execute.
Maybe have a pre-race check list? Score how you feel (angry, chasy, focused, alert etc), what the market is, when it is, is it noisy, what's your risk is going be etc etc BEFORE you make your investment. High score then pile in, low score just have a fiver and call it practice. You need to put a procedure in place as a substitute for the controls you find in other jobs.
I'm not preaching Korattt just trying to think of a different angle for you, we're all different so you never know what's going to click.
Now I think of it I'm sure pw once said he has a some sort of market scoring system that checks how the planets are aligned. His will be almost subconscious and not include his highly trained focused mental state I suspect, but yours might need to be on paper and have a section for the state of your head.
Sorry to bung up the thread but not worth starting another. All the best for tomorrow.