Changing careers at 10 years into a job, is it realistic? (update)

I want to move from nurse's aide to something with more stability. I have read a lot of threads here and could not find my exact situation. I have a little time and a small budget for training. How did you start?

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

Try a small project in the new field before committing. It told me a lot about whether I would enjoy it.