To me, the most sensible approach to being a trader is to determine a set of rules and principles that are intelligent and fact-based, after which it is execute them according to organize. Every so often, have a step back to re-examine your goals and techniques to see whether or not they still add up. The bottom line is attempt a long-term view, but recognize which will sometimes mean short-term endeavour. There is no logical contradiction in that.

I encourage you to coach yourself. Books are not expensive