glad to be of service. just don't discount the once in a lifetime factor.
also, i have said on occasion to get all your customers money, so I believe I was quoted in an earlier post (out of context I might add)
What I mean when I say it is this...
That customer has a job, they will get another paycheck next week from that job. I will not get a paycheck unless I convince that customer to give me money. I firmly believe that in residential service you have to look for everything that customer legitimately needs and bring it to their attention. If you don't you are doing them a tremendous disservice (how would you like the oil change guy who didn't tell you that your break line was cut?)
You need to find ways to get their money into your pocket. Not by raping them for 1 job, but by finding 5 more while you are there that they need done.
Don't fool yourself, once you go into business, you are no longer an electrician, you are a salesman. whether you like it or not.