This seems to me like an imposition. You are telling the universe you want more of you. You want to grow materially, and you want it to support you. You are pushing out.
I am very leery when I hear people say “control what you think”. Clearly, tactically, when you are in the middle of some time delimited operation, it’s important to stay on task. But in life, telling yourself to laugh when you are miserable, to act happy when you are not, to think good thoughts when you hurt emotionally everywhere: it is a recipe for self destruction through self deception. It makes you fake. It is easy to spot the people doing it. Miserable but not fake is a thing. Happy and not fake is a thing too, but one doesn’t see it very often. Modestly OK but pretending to be happy: this one sees every day.
It is quite possible to hang an invitation to the universe in the air, and ask it to come to you, so that you can share coffee together in the middle. You can ask it what lies ahead, what it can tell you about the best path for you, where the learning is to be found. You can give and you can take, and both parties leave satisfied.
Now, this is quite separate from the relationship you have with yourself. It is important to learn not to be self abusive, but this is very different from positive thinking. This is a gradual process of untying knots, of opening energy, of remembering that you too are a child of God, and God a Father/Mother/Light from whom you can seek guidance.
There is an ecology of spirit which I feel should be respected.
We get so many things so radically wrong in this world. My hope we can do better does not rest on positive thinking, but on the observation that the future is unpredictable, and that if the past is filled with miracles–as it is, if you look for them–so too might the future be.