Leverage

You must leverage your time so that one hour of your time can produce ten hours or 100 hours of value for your business. Imagine that your time is worth $100/hour. If you make six touching base calls to a client for ten minutes every other month for a year and the client refers a new client which is worth a $10,000 commission. You just leveraged one hour of your time to be worth 100 hours of your time.
You must leverage prospects, clients, assistants, vendors, real estate agents, brokers, franchises, money, and knowledge. You must leverage everything, all the time, with a business plan documenting how you are going to create that leverage.

Excerpt from Billion Dollar Agent: Lessons Learned