Changing careers at 18 years into a job, is it realistic?, web developer here

After 18 years as a web developer I am thinking about moving into a different field. I have good customer skills and I am comfortable with spreadsheets. How did you start?

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

I began with informational chats, then a short online course, then a related entry-level role. It took about 12 months.