Yes but not for more security. Left the motor trade, where I had no clue what I was earning from one month to the next, one weekend off in four and a day off in the week when all my mates were at work.
Joined the bike trade as an assistant to the Service Manager and have worked my way up over the last 10 years. Less money at the time by around 4k a year (but difficult to tell because of the commission structure), but the security and knowledge that I couuld cover my outgoings every month at least made me sleep a little easier.
As the saying goes, we are here for a good time, not a long time!
If you can trim your outgoings enough to be able to do it, do it I'd say, especially with the way the economy is at the mo.
Good luck whatever you choose.