You don't make a decision about being a writer. There was a point, aged 21, when it became clear that this is who I am. The choice is how good you are going to be at it and how hard you are going to work.
I just assume that I'll fail at something for several years - that I'll try my hardest and still fail for several years. With writing, that turned out to be wrong. I tried my hardest and failed for about fifteen years.
I'd grown up in a working class neighborhood in Baltimore, a place hard hit by the offshoring of numerous heavy industries - steel, textile, shipbuilding.