I know this may sound somehow impossible for some, but really, to be successful in trading, you need to have the mind of a machine. Now, you cannot have this if you do not have a strategy and you cannot have a strategy if you do not take your time to learn.
Let me explain myself better, for instance, when using trading robots, you input your strategy, and they do it better because there is no emotion attached to it, except that they just do exactly what they are programmed to do. You cannot do well without a strategy and you cannot do well too when you keep changing strategies over and over again.
Learn, get a strategy, build on it, and then trade it like a pro. It is imperative that you get to see trading as a profession, which would always make you to see yourself having to let your strategy play out than letting your emotions rule you, which I believe most new traders are guilty of.
What makes you even better than a machine is the fact that you can think, you can fine tune your strategy with experience you keep gaining over time, but when it comes to never letting your emotions come before your strategy, you need to be like a trading machine.
I would like to add something on your post, a small detail that would add some leasson on it. So here when you build a strategy you may experience any kind of failure and the thing here is younwed to rebuild to think another one that will succeed, but if it faild DO NOT STOP KEEP ON MOVING UNTIL YOU GOT IT RIGHT.
Also if someone here says Machine tooic only yes OP says emotions which failure cant be stop so my lesson here is do not stop. You programed it but what happened you just do nothing but depend on the machine. So, go and do it yourself.