Build your booster section. You add to your value by having a group of people who are on your side. Keep in touch with colleagues. Send frequent and unforgettable notes or e-mails to your professional friends. Congratulate them whenever they're promoted or recognized for some achievement, or just write to say how much you enjoy working with them.
Professional associations are great sources of boosters.
As a member, you continue your education while meeting your industry leaders and trendsetters. When you volunteer to chair a committee or work on a special project, you make others aware of your commitment to your industry. Do the impossible. You're invaluable in the marketplace when you build a reputation for doing the impossible. It makes you indispensable.