How does one accept something as done?

Hi, I’m new to manifesting. I’m doing everything I can.

I definitely see improvement and feel better. I’m confident and just KNOW things will happen and they usually do.

But there’s a big issue I’m struggling with: accepting it as done.

For context, I need to payment by Monday. VERY IMPORTANT. My investment has been delayed and delayed and delayed. Even with me completely forgetting about it, imagining it as paid, etc. it has not arrived yet. How can I manifest it to arrive Monday?? How do I see it as done?

This where I struggle. I have confidence it will happen, so I know it will. But not when.

And I am trying. I picture myself already having my SP and driving my dream car. I picture it in the moment, and also like “oh my cars in the garage, I took the other car today.” Am I even doing manifesting right??

So I am confident in getting my goals. But not the instant part. And that’s what I need. Particularly for this one thing.