The hard thing is "keeping your skills current". Once you have been in a job for a while it can be easy to stagnate because you end up spending most of your wo

The hard thing is "keeping your skills current". Once you have been in a job for a while it can be easy to stagnate because you end up spending most of your work time maintaining something that was written in ASP.Net or PHP4 or whatever and it doesn't make business sense to do a rewrite in something newer. The alternatives are to job hop or to work somewhere that is constantly using or evaluating new tech. Or to spend your own time learning new skills , which you may have less of when you are older. There's also the issue of deciding what to learn, since you can't realistically learn everything. I've been burned in the past by spending time looking into various technologies that have never really gone anywhere. It's hard to make a bet like "Will I be more employable in 10 years time by learning node.js or go?"