Just because you haven't seen a friend for a long while does not mean that you two have drifted away for good. They still care about you, and they would love to hear from you. Today, call them up and ask them for some advice on an issue you are struggling with. The fastest way to get back in synch with someone from your past is to have them join you in solving a problem: because finding a solution is a way of creating something new together. Things can start anew.