Changing careers at 10 years into a job, is it realistic? after 10 years as a security officer

After 10 years as a security officer I am thinking about moving into a different field. I would rather hear the honest version than the polite one. I have a little time and a small budget for training. Did you take a pay cut?

I began with informational chats, then a short online course, then a related entry-level role. It took about 11 months.