The main requirement to become a successful Forex trader is to shift our mental attitude, from a normal person to a trader. This will come as we learn the basics of the currency market, learn to read data and charts, and try to enter trades and then make transactions.
The psychological aspects of trading are much more important than just entries and exits. Because these things can determine the success or failure of a trader in the long term. It could be that exits are more important than entries, because each entry does not guarantee a trader a profit. All of this is very theoretical and can be learned from books, online lessons, and mentors.