1. Motivation is an internal process that desires change in oneself or the environment. It is defined in psychology as what causes behavior and why behavior varies in intensity. 2. A sales manager can motivate their team by building trust, understanding personal and professional goals, setting daily/weekly/monthly goals, and providing rewards. 3. A sales forecast estimates future sales under a marketing program and economic factors. It enables systematic work, production planning, sales responsibility, budgeting, and product decisions.