alt Hacker NewsTangentially: I think a lot of people forget/underestimate the degree to which the industries behind their job are ones that they need to diversify away-from.
In other words, a programmer should invest a bit more away from software than average, a realtor should invest a bit more away from properties than average, a coal-miner should invest a bit more away from energy and mining, etc.
If you have your job, you can weather a stock-downturn, and if investments are solid, you can weather a period of unemployment by liquidating some, but if both hit trouble simultaneously then that's much much worse.
That makes sense, and it probably should be said more. It's probably just because we invest in what we know. If you're a real estate broker, you have an interest in properties, you think about it all the time, so you'll buy your own properties, or invest perhaps in builder stocks. If you're in tech, well, I don't need to say it because that's most of us. If you work in the energy sector, I imagine you know a thing or two about transport and esoterica of speculative miners or drillers, etc.