At 25 I just moved sideways from doing embedded software development to web application development prior to the dotcom boom. That led to solid IT skills and a

At 25 I just moved sideways from doing embedded software development to web application development prior to the dotcom boom. That led to solid IT skills and a very interesting career. I don't think I'd change anything. Biggest piece of advice would be to save half of what you earn. (or try and live off half of what you earn) At 25 I'd just become debt-free, but it took me a while to figure out how to reduce my tendency to spend whatever I earned. If you could do that, then at 40, your expenses are covered by what you earn in investments. That frees you immensely. Oh, and take time out to enjoy it all. That's key.