I would also argue your personality has a lot to do with it. Some people simply cannot not trade intra-week, some maybe day trading a bit a day is the way to go. I'm a terrible trader, because I start to itch when I see price action, and even trying my best to just go by fundamentals and TA, I often see myself trigger happy. I was not made staring at charts and waiting for entry/exit points. The irony is, I'm very bad at day trading, but quite good at fundamentals and entries/exits. I just can't be the one actually executing the orders

Mentality has to be the number one determinant of successs not only in trading but in everything in life. Some times as you mentioned you're just not suited to a certain thing or a certain thing is not suited to you. It's so important to be true to yourself and honest about your strengths and weaknesses. If the OP is as honest with himself as you are he may not find success in day trading but he will find success in something.