The way to prevent your skills from becoming obsolete is to learn related skills rather than very different ones. The people making money writing pure html in

The way to prevent your skills from becoming obsolete is to learn related skills rather than very different ones. The people making money writing pure html in the early 90's who are still employed mostly didn't move on to writing systems code in C or business logic in Java, they learned css, javascript, and/or Flash and kept making web sites for clients. The ones who managed to keep charging high rates did that by always being just in front of the curve on 'hot' technologies.