So_mi I can't write properly until I'm in the proper mindset to write
This is the single biggest mistake amateur writers make. If you wait until you feel like writing, you will very rarely write.
The best way to do this is to set a simple goal, and make yourself stick to it. It will feel sometimes like you are wasting time, but trust me, as someone who has done this professionally, 90% of being a successful writer is being disciplined enough to keep writing without motivation or inspiration. You don't have to write every single day, but you do have to write consistently, want to or not. The more you do this and the further you get into your habit, the easier it will become, and the less effort it will take.
Also, try these two tricks-
First, keep a notebook on you solely for writing. Use it only for taking notes, jotting ideas, or recording observations or snippets of dialogue. Develop a habit of using it daily, and re-reading it often. This will help feed the garden of your imagination so it is fertile for new writing to come out.
Second, always end your current writing session halfway though a sentence, dialogue, or scene. This will give you an immediate jumping off point that will get you moving without needing a lot of thought. Most of the difficulty and anxiety around writing typically manifests within the first few minutes of starting a writing session, and is largely based around not knowing what to write. This is due to it taking time for your mind to settle into the space it needs to be in to write effectively. Save yourself from this struggle by making the next thing that needs to be written obvious. Doing this will give you a moment to let your mind warm up and fall into a writing flow, and should make your writing less anxiety-filled and more productive.
Hope these help!