I remember when I first started trading.

I read books that said you should “pick your main time frame and then look at the time frame above it and the time frame below it”. So, for example, a swing trader would pick the daily time frame as his main time frame. Then, he or she would pick the weekly (above) and some intra day time frame (below).

A day trader might use the 5 minute time frame as the main time frame. Then look at the 15 minute (above) and 1 minute (below) time frames.

This is a nice theory but I have a problem with it.