I'm 42 years old. I've been a high school teacher all my life, and I'm currently building a second career in software development. I like that having a second

I'm 42 years old. I've been a high school teacher all my life, and I'm currently building a second career in software development. I like that having a second career keeps me fresh - I'm constantly challenging myself and looking at things in new ways. Also, it's great to have domain knowledge in one area and look at things from a different perspective in another area. So yes, strike out before you grow old and stale in one field. But look to bring your expertise into the new field, so you offer something that people fresh out of college can't offer.