I think working in construction would be very helpful. My dad and my uncle built houses with scraps and did most the work themselves. It took years for the projects to be completed. They both worked on many job sites, had good connections and friends to help. I remember the progress and steps involved in the construction of both structures. I remember my dad working well into the night on his project.
You don't want to take too long on some things, like framing. With the housing market crash and stuff there are unfinished houses rotting away. My parents knew people who started building a large house and ran out of money. They lived in the basement of their unfinished house while the frame was rotting. I don't know if it was ever finished. I think the frame became structurally unsound as it deteriorated from the elements.
IT AINT EAZY BEIN STEEZY