Changing careers at 18 years into a job, is it realistic? - 15 weeks in

After 18 years as a quality inspector I am thinking about moving into a different field. I have read a lot of threads here and could not find my exact situation. I have good customer skills and I am comfortable with spreadsheets. Has anyone made a similar move?

I took a small pay cut for a year, and it was worth it for the growth afterwards.