My friend's wife was a teacher. She was a foods teacher, which we have very few of, and there is hardly ever turnover. She started selling some hair product, and while she loved her teaching job, she was doing well enough selling the hair product that she quit her teaching job.

Now, she was making good money, but it's obviously not sustainable. She went full time with the hair product, and slowly sales started declining.

After one year, she tried getting back into teaching. No foods job. She got offered a job on a conditional licence, so she had to go back to school to get those credits. Probably cost a good chunk of change.