When times are good, people will act out of convenience, but when times are tough, you find out who really cares. The value of relationships to success in sales will never diminish. In fact, some might argue that they're only becoming more valuable. Your job is to strengthen as many relationships as you possibly can. Be honest. Be a good listener. Be helpful. Be there. Go the extra mile and stay in touch with people who change companies. They may be able to open new doors for you.