Conundrum, the folks here who are good watch all day and are expert chart readers. They know how to jump in and when to jump out. Some pumpers on this board are also selling when you are buying. It's a difficult thing for us working types. Don't forget that most daytraders lose their money and have to quit. Swing traders--well I'm sure lots lose money too.
I lost a lot of $ in 2001 on long term investments, and now am trying to get some back during an up market. So far I'm gaining, but it may just be luck and an up market, not necessarily my own skills. I'm terrible at getting out the right time. I'm either to early or to late. Also, losses affect me emotionally, so that means I shouldn't even be here.
Anyway, like all things in life, to be good at it takes much time and effort. It took me many years of college to become good at what I do for a profession (biology/chemistry). It'll probably take as many years to become a good occasional swing trader if I can stick it out.
Good Luck!