Game, Not Games:
Assume the most of people, not only because it's nice in general and an optimistic outlook, but because it's smart. Strategically, you never know who you’re dealing with, or how they can help or hinder. Just as wolves sometimes come wearing sheep's clothing, the best potential friends, allies, benefactors, and partners will prefer to keep their cards close to their chests and not visible to the general public: so as not to be taken advantage of. They know people want what they have, so they protect themselves.
Assume others are beyond you in all ways, and act as such towards them. Often times, they will prove these grand assumptions wrong: people reveal themselves to us and we can modify our perceptions with this new information. However only see them as “less” once they have shown you this themselves. Preemptively assuming another is “less” intelligent, capable, strong, experienced, skilled, etc. in some way means they have an advantage over you immediately. They will always have the upper hand and the element of surprise on their side because they will always be more prepared in any negotiation.