A person's word is his bond. Probably not many. We all spend so much time protecting our ideas because there are people who are so unethical, they will steal your ideas without a second thought. Not one of these people is a winner. If you believe in karma, they've got a big karmic kick in the ass coming sometime.
Winners are helpful.
I had a good friend in college named Cliff. He is my standard for being helpful. The night before a big chemical-engineering final, he spent his evening helping his roommate who was being noisily sick from a big night of drinking. Rather than leaving him to pass out in some back alley of Boston, Cliff spent the night helping him at the expense of his own studying. He was the kind of guy that all the girls liked because he was like their brother.