The universe isn't separate from you. It doesn't judge you or anyone else more than you do yourself. It doesn't decide things or make negotiations.
It won't grant you wishes, because it responds to what you assume -- not what you want, no matter how positive you are. It won't give you more than you assume you have or make you more than you assume you are.
It doesn't omit words like 'no' and 'not,' unless you intend for it to. It doesn't have a brain of it's own.
You are not a part of the universe, the universe is a part of you.
Religion and spirituality are whole different things entirely. Some people feel emotional attachments to God or another entity, and that's absolutely okay.
However, I just wanted to say that the universe doesn't possess prerequisites for functioning. It gives you only what you intend to have. I say, 'it gives you' figuratively, because I don't believe we are separate from the universe. The whole idea that being positive is the only way for the universe to 'listen' to you isn't necessarily the truth and can cause more confusion than clarity.
I thought the whole point of creating your own reality was creating your own reality, not waiting for someone or something else to do it for you. Work towards creating it, without thinking of the supposed prerequisites you've learned from books or teachers. Experience is the most proficient teacher you'll learn (but don't take my word for it).