I started Long Term stocks 1978 and did well from the start, due to commissions being $125 in stocks, thankfully that delayed me losing money day trading till later. Back then you learned how to chart by hand which forced me to really learn charting. Seven years later I started long term in Commodities and losing, I was not ready for leverage, but when you are young you do dumb things, couple years after I started day trading S&P500 and losing there as well. Took 6-7 years of losing in those styles before turning it around and all the losses were recouped first years, my first edge was actually using a breakeven stop plus one tick. Most don't realize you have to do 100% a year to pay for fees in day trading. In the 1980-90s, making one point in S&P500 futures was $500 and pay $25 in fees was 5%, but now one point in ES is $50 and retail paying $4 is 8% is huge. Much has changed since then relating to learning to program to risk management. Where I thought you had to be smart to learn how to trade, you learn slowly. You have to be smart enough to program all your ideas or find people who can, then dumb enough to trade them, when I speak of being dumb-do exactly what your Trading Plan calls to do. The markets has become much more of you against computers, so then I started do much more automated system trading in stocks, ETFs, and commodities. In last year I have stopped back testing for day trading as I can see it gets tougher to get my fills completed.
I see myself now as a risk trader, trying to balance initial risk in long term between underlying and options. I have switched my energies from day trading back to longer term commodities and shorter term duration in trading options and future spreads. Where I use to day trade twelve hours a day, I day trade three hours, increased size initially, average down(I don't advise). I study much more now than ever before to better understand. Instead of trading only day session, I prefer to manually trade most markets during nights except for one hour of day session in ES, let automate grind through the HFT day. I think for smaller trader will always be able to retail trade something so long as you ok with slippage, but scalping just getting tougher and I love staying in trades years than minutes, I like wrapping options around the underlying and letting options decay. Scalping you have to get your price and long term or options much less so, instead of having to watch every tick, I only monitor couple times a day. So my style has allowed me to be more of an absent trader.