What does it take to be considered a 'good' player?

[SerLuke]

So you think that people giving advice by saying "have fun", "just don't be negative" etc etc are actually giving good advice for improving as a player? To each their own but you don't kill bosses with fun and positivity.

Oddly enough typically I've seen in 24 man raids after a few boss wipes the people who were dishing out the negativity and insults leave and we clear the boss that people were having trouble with on the very next pull.