This particular project was a culmination of a number of different techniques I have learned over the years of projects. I know to know how to perform demolition work like a surgeon, move electrical wiring, build dove-tail drawers from scratch, build custom cabinets, finish trim on cabinets.
I began working on the drawers and cabinets in the evenings in March and didn't complete the entire closet until the end of June. Of course I wasn't working on it that entire time, but spreading it out was too my advantage. I had plenty of tweaks and adjustments along the way.