Yes, but it's best to be specific and say why you care about certain things. If you write good team player, results oriented, passionate blah blah blah you might as well not bother because everyone else writes that too.
Try and find something to say that's unique to you and be objective, factual with evidence that'll make you stand out. don't be afraid to inject a little personality, but if you're not sure then err on the side of 'better safe than sorry'... get someone to proof read it :)