The other day we had an electrician come round to replace a fusebox. He kept trying to do what he had quoted as a two hour job too quickly. He kept rushing, dropping things, swearing, falling off his ladder, and shocking himself. He would attack a screw with completely the wrong size screwdriver to "save" 20s finding the right one. It took him the whole day. Then I found he had left the heating permanently on. I figured out how it was all supposed to work myself from the bits he had ripped out, and then he spent the whole of the next day putting it back together with me telling him exactly what to do. I paid him for the original two hours.
I don't think it matters what you do in life or whether you call it an art or trade. If you can take a bit of pride in your work and try to do a good job that's what makes it worthwhile.