Oh yes.. I specialize in ancient forms of 'damascus'... or pattern welding. I do composite patterns that go back to the early Iron Age. I've also made mokume-gane (in iron and copper alloys). I've had to learn goldsmithing, silversmithing, engraving, wood carving, etc for my work. I do sole-authorship work that requires a multi-disciplinary approach. I've since learned that each time I've picked up these skills... I was likely hypomanic. Researching like crazy, buying books, buying new tools/equipment, spending, spending, spending. And then I would wake up and realize that I have not made a dime in a month... and then depression. So.. in some ways I think I owe where I am to this disorder when it comes to the art and the craft. But as soon as I start becoming successful in a financial way... I see butterflies. And then the connections that bind these butterflies to my reality. Those connections 'justify' my actions.. in my own head. So now I'm learning to see the red flags. One big is one is when I try to hide the butterflies from my wife. :-)