For years I had the policy; hold two jobs. One is for living expenses, one is for playing. I adopted this during graduate school when my wife worked full-time. We lived off her salary and I picked up part time jobs to play on. Kept it going for years afterwards when I worked two jobs and she went to school.
Now my wife is working full time so we live off my salary and save hers, while playing off the income from our rental properties.

It's not a very sophisticated budgeting procedure but its simplicity has worked effectively for us for years.

We either kept separate checking accounts for each function or ran living expense thru a checking account and playing expenses via cash.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13