Yep - biggest key is stay current. Change to new langs / systems if needed so you can stay in the "the most desirable" camp. Don't marry yourself to a technol

Yep - biggest key is stay current. Change to new langs / systems if needed so you can stay in the "the most desirable" camp. Don't marry yourself to a technology. This is especially critical IME as you get over 40. I learned the hard way :(