Life is pretty inexpensive for this family of 4.
Car - Buy a car that gets over 40mph and costs less than 5k and get PLPD insurance on it and drive it for a decade.
House - Make sure it's close to work. Get a house that's less than 2x your gross. Get a 15 year loan so that only 1/3 goes to interest on payment #1, and it gets better from there.
Food - Buy the following staples:
50 lb sack or rice
25 lb sack of pinto beans
dry lentils
dry black beans
dry split peas
Always have a 10lb sack of potatoes in a cool spot.
Then, each week, go to Aldi and buy a TON of produce and dairy for 50-75 bucks. You're at that point all set to make nutritious meals for a family of four for a week.
Taxes - Make full use of Roth IRA's, 401K's, 403B's, 457's, HSA whatever you got to the fullest.
Misc -
Showering/Shaving = 20 bucks a year for me
Razors - I buy 3 ten packs from the dollar store and use a new one every 2-3 weeks. Shaving = 3 dollars per year.
Shampoo/Conditioner - Fuck it. I rinse my hair in hot water each day when I shower and it always smells fine.
Soap - I buy two 10 packs of Dove for Men bar soap for my body. This lasts me more than a year.
Haircuts - Mother-in-law cuts it for a hug:)
TV - No cable, satelite TV, Netflix. I do Amazon prime which gets me free shipping all year, plus lots of tv, movies, and music.
Entertainment - Biking, walks, beach (we live right by Lake Michigan), reading, parks, playgrounds, libraries.