The main thing about being positive is embracing and accepting your human. Taking the good & bad energy then making the best of it. Learning to control your emotions to work in your favor, instead of against it.
The ideal positive mind is optimistic. Not completely oblivious to bad things that happen but appreciative of things happening just as they did and not any worst than they could be. Training the mind as the world revolves is probably one our biggest skill sets. Whats a powerful person, without a strong mind.