Changing careers at 6 years into a job, is it realistic? (update)

I want to move from project coordinator to something with more stability. It has been weighing on me all week. I have a little time and a small budget for training. How did you start?

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.

You likely have more transferable skills than you think. Write down what you did, not what the job title said.