How do I let go of limiting beliefs

So long story short in the next 15 days I need to pay off my tuition and find a place to live in a brand new city. I was lucky enough to land a job and had multiple offers which I’m extremely grateful for so I know I’ll be fine financially in the next few months but I’m just not sure how I’m going to be able to move, pay off my tuition while I’m already in debt.

I’ve manifested things before in the past but I’m still really new to manifestation and don’t know what techniques work for me just yet. I affirm and try to visualize but recently anxiety and doubt has been creeping in and I think it’s really ruining my manifestations.

How do I let go and manifest that everything works out for me?? There’s a lot on the line for me and I know the universe got me, I just have a hard time making my brain and body believe it. Any tips help, thank you in advance