You gotta be careful because stats show the ranges and speed of the price action of the most popular day trading instruments has
declined in comparison to the 1990s when day trading was popularized and a hot career. Also, I'm gonna assume that you're talking about the Emini ES futures although I'm clueless to what market the OP was talking about considering he didn't name a specific market.
Involving the Emini ES futures, it was much easier to be profitable back then in comparison to today for many reasons. Fees were lower (I'm not talking about broker commissions), ranges (swings) were almost 2 - 3x larger back then in comparison to today, markets extremely sensitive to economic news, earnings reports, heavy rebates and so on. Back n the day you can easily take a quick -10 points loss on Emini ES futures and the very next trade within the hour you can hit a +20 points on Emini ES futures and that would only represent 1/2 the swing movement.
Try doing such today with the range even if there's a +20 point swing movement. The problem today is that if you spend too much time looking at static hindsight charts in your swing analysis...you'll get caught with an
illusion about the swing movement. In contrast, its real-time actual movement in today's markets, there's a problem with the liquidity in comparison when day trading was hot back in the day. Nanex has some very good up to date statistics on this issue...an issue mainly due to the growth in the manipulation tactics of
algorithms. Also, Stocks & Commodities magazine (SC) use to keep excellent monthly liquidity data but they stopped doing such last year. Anyways, I use to chart their stats and it too showed the
decline in liquidity. I then compare it with the decline in the swings and they correlated very nicely.
Simply, a +20 point movement in the Emini ES futures in today's market conditions is nothing like a +20 point movement in the Emini ES futures in market conditions when day trading was popularized. Today's swings have more chop, more sudden drop in liquidity that seems to come out of nowhere as if something is playing a sick game although price is still moving and lower tick movement and today's movement is much slower in comparison to back then. Some folks blame this on HFT but ironically when price action is moving fast, smooth with increasing liquidity...they also blame that on HFT.
The only time you see movement in today's market conditions that's compatible to movement when day trading was popularized is that price action movement of January 2016 and the first few weeks of February 2016...some loved it and others hated it. It was fast and cover a lot of distance in a very small time duration along with having an increase in liquidity.
Yet, once again, be careful about the statistics. The above deals with U.S. markets. In contrast, the FX markets have been growing in the number of day traders, growing in liquidity and just growing in many other areas which is mainly due to the growth in FX markets of 4.0 trillion to 5.3 trillion
per day in the last few years. Yeah, once again, people are blaming it on HFT for the growth in FX including for day trading.
Lastly, most traders are losing regardless if a +20 point movement in Emini ES futures is smooth with rising liquidity or not smooth will declining liquidity...fast moving or slow moving. The choices are simple...adapt in the age of HFT or hang out at forums complaining about them.