How long?
I started in this business around 1989 and left around 1991 (was fired). Due to bunch of bad luck and a blemish on my personal record (misdemeanor, served 6 months under house arrest) the only people that would hire me crappy jobs like a car wash. I struggled for 12+ years like that. This was all over a bit of pot, not even 1/8 of an oz... to all you kids that think it is cool to smoke pot, think about trying to apply for a job, if you lie and say you were not convicted, they WILL find out. If you do say you were convicted, who's going to hire you?
I never went to jail. I had one of those things on my leg like Martha Stewart does now. Even though it came off six months later, and I have not smoked or drank since I was arrested in 1991, to this day I'm paying for it.
In 2003 I bought a Graphtec CE1000-60 used (about 1996-97 vintage) and started making signs again. In 2004 I took a part time job at a retail store (mostly nights and weekends) for 30 hours a week and was doing signs during the weekdays another 30 hours a week. I had my hours cut after Christmas to 20 hours. Doesn't bother me, more time to make signs...
I got married in 1996 and my wife has a good job. We were able to buy our house in 1999. I was still a minimum wage earner in those days. The retail store doesn't pay a lot more than minimum wage right now.