[edude03]

There isn't really a clear answer to this as if there was everyone would do it and because of supply and demand it wouldn't be a valuable anymore.

That said, there are a few "meta strategies" you could consider

1) get really good at learning and hop from hot thing to hot thing

2) do the jobs that no one wants to do that also pay well (mainframe maintenance, documentation, sales?)

3) get really good at soft skills and put yourself in positions like management where a lot of your staying power (and income) comes from the relationships you build and maintain