Random calls work like magic. Through cold-calling old friends in an effort to “stay in touch,” I’ve discovered great collaborators, learned things I could never imagine, and been offered jobs. Keeping your network fresh is important. And it’s really easy to do when you find yourself bored, commuting, or waiting for laundry. Just pick up your phone. Skim through your contacts. Pick someone you have not spoken to in a while. Call the person. Don’t think about it. Just do it. Think you need a reason to call someone? “Catching up” is a perfect reason to call someone. I’ve said it before, I’ll say it again: stay in touch.