The same concept is true for about any business. How many O/O's have failed because they run all week and spend everything leftover after fuel expense. Then when they have a breakdown, their all upset with the carrier the vehicle manufacturer, the garage and anybody else they can think of because "they" failed.
I agree as a driver you have to have a plan and stick to it. Drivers have insurance, maintenance and repair costs, replacement costs and of course fuel costs. A good goal is that if you are working in July you are working to pay September or even Octobers expenses but still budget like your broke. You can get there with some planning and hard work.
Here is an example: 7000 paid miles a month with 20% Deadhead
Fuel - .28 ( 6 cents is deadhead so, limit empty miles & if you drive slower your mpg goes up)
Ins - .055
maintenance - .042 ($300 a month set aside for that)
Replacement - .06 (you can replace, or pay off a $20,000 vehicle in 4 years)
In this example the total cost to run a cargo van is about 44 cents a mile. These are your business expenses and you have to make sure that as loads come, you put that money away. Another option is take the first part of the month to pay all your fixed expenses and put money away for fuel, than you can use the last part of the month to run for profit. The point is that drivers need to take care of their business first to sustain taking care of their home. We all need to manage our business in a way that is smart and not just pay as you go.
Now how much do you want to bring home? With the 7000 mile a month example, if you want to bring home $800 a week you will have to average $0.90 a mile. If you want to bring home $1000 a week you will have to average $1.01 a mile. You can run less miles at a higher rate or more miles at a lower rate and accomplish the same thing. The driver needs to decide what fits their goals and lifestyle. The sad thing is that too many companies would rather work with drivers that have an employee mentality. They just run them until their wheels fall off, give them no guidance, have no idea what their goals are, then just recruit other drivers to replace them when they fade away.