Trend or not, directional trading is about being on the right side of price differences. In order to manage to be on the right side more significantly than not, one needs to stop relying on hope, greed and dumb luck. Instead, start focusing on creating a process that may work. You never know in advance if it'll work, and you need to let go of the need to make money on every trade.
Those who believe short-term is easier than long-term are most probably deluding themselves or others. If you need to close all positions every day, you lose the ability to control when to take profit and when to take loss. Then, probability is forced into realization and you had better regain control in all other aspects of your trading, to compensate.
If instead one is focusing on all the aspects that are difficult or not working, one is not making much meaningful progress. It's important to cast away / ignore what's not working, but also be open to the possibility one can make it work in the future. This open-mindedness and playfulness is important in order to overcome all the difficulties.
Finally, even if all aspects of trading can be automated, you still have to overcome the emotional pain and doubts when confronted with the inevitable drawdowns. Except if one is a market leading market maker, they will come.