What often happens, is a contractor may be working in construction, or remod work, he gets a service call and responds, does the work, bills at the same rate, not even checking, to see if the job, lost, broke even, or made money, he may never see the loss it produced, because he either has no cost basis, or lets the service call, melt into the unburdened costs, he may look at it as i did, before i understood the real cost of running a business, that seems like to much to charge, or i can't charge that much for residential repair work.

Once you do the math, it is easy to understand, i made these same mistakes years ago, and thanks, to fellow contractors, and my accountant, i was able to get back on track.