I have a good job, unix systems administrator. I make decent money, and I work for a stable place that won't be going away. But that job is in Boston, which is not the cheapest place to live.
I have been half-assedly heading down this path for a while. I have done some very good things, such as getting rid of my car and going all public transit/bike or car rentals as needed. this is harder with a 19 month old, so I do end up renting fairly often. Luckily with zipcar and weekend specials at enterprise it's fairly low.
lets see the breakdown of my income/spending last month, and go from there.
Before I start, I know I have a LONG way to go, but advice, criticism is expected and wanted

Income: $5726
Rent: $1100
Auto/transport: $413
Groceries: $632
Restaurants: $848
Fastfood/Coffeeshops: $202
Pets: $65
Travel: $124
RothIRA: $300
Internet: $55
Online server/backups: $70
College loan A: $268.27
College loan B: $216
Investment: $1000
Natural Gas: $40
Electricity: $40
Kids: $250
Total Expenses: $5628.27
Auto/transport: some topping up my gf's T pass, but mostly rental car, OUCH
Groceries: a huge number we're working on cutting down this month
Restaurants:an even HUGER number, cutting this HARD this month
Fastfood/Coffeeshops:also HUGE
Pets: we have 2 cats and had to buy food/litter and had one vet visit
Travel: I had a job interview in Amsterdam, had to pay some incidentals like hotel tax, train/tram, and food for the 3 days
RothIRA: nothing to say here, this is gonna stay as is I think.
Internet: fios, we don't have cable TV, just internet and use it for streaming netflix/hulu, and I use it for work
Online server/backups: run my own server "in the cloud" and pay for backups of my laptop and parents desktop on amazon s3
College loan A: Left to pay, $3500
College loan B: Left to pay, $8400
Investment: Into my schwab brokerage account, starting my ERE life.
Natural Gas: Stove and hot water are done via natural gas, this is probably the low point of this number year round.
Electricity: No AC this month at all, and honestly almost none all summer. Keeping this down for the rest of year should be easy
Kids: new clothes for the 18 month+ winter clothes season. (also new shoes, kid has wide feet, pita) We will be doing some craigslisting for clothes in the future I think. She eats big people food now, so her food is in groceries and all the rest.
So, of my expenses, the inflexible ones are: rent, RothIRA, Internet, Online server/backups, college loans, natural gas, and electricity, for a total of $2089.27 a month. Now obviously, we need food, and heat costs will be going up over the winter, but hopefully not too high.
Quick hits, We're not eating out nearly as much, and no ordering in. The grocery budget is staying at about $480 for now. I am hoping to keep the restaurants/fast food spending under 100 total, and the coffee shop under 50. I am going to move the online backups to something like carbonite, for $50 a year instaed of $35 a month. That will also be a huge win.
If I keep it to those numbers, that is spending $2634.27 a month, which, with my "normal" income of $5000 is 52.7% of my income, allowing me to save 47.3%
That is a good start, and I will aim for 50% savings.
I have two thoughts on doing that, one is to just start investing and saving now, and keep paying my college loans at the standard rate OR I can take that extra and pay off the loans in short order. Right now I am leaning towards paying off my loans quickly, to increase my cash flow. But with stocks being "low" still... I'm tempted to get going on buying some dividend producing stocks.
Also, I suppose I could NOT put money in my rothIRA either. OH I forgot to mention, my work puts 5% into a 403b for me without me having to contribute anything. Currently I have a TINY amount in my retirment accounts, $34000.
I look forward to hearing your comments!