Tips for manifesting a promotion at work

My mentor who will represent me said I’ve done amazing work and I should be proud and worked really hard but due to a technicality which is not my fault at all, he is concerned I might face some pushback from the committee and he doesn’t seem very confident. But he is also saying I’ve done everything I can. Which put a lot of fear and self doubt into me. So now I keep dwelling on it. And whether he will even advocate strongly for me.

What are some tips for manifesting that I got promoted to Manager without letting these limiting beliefs and thoughts creep in?

At the moment I tell myself “it’s mine”. “I did it!” “I got promoted”, “it’s already happened in the future”, “I’m a manager”! and envision myself being a manager. But a few minutes later I go back to the 3D and start dwelling on what he said. How to make this stop? And are there any other affirmations I can say?