They don't allow themselves to play golf until they sell a certain number of units. Sure they make sacrifices. But in the meantime they also make sales. Most who practice this method of self denial say that when they do earn a lunch or a golf game, the taste is very sweet when linked to successfully accomplished activity. When you take your sales career too seriously, it becomes drudgery instead of enjoyment.
Most top producers mention that their income takes a back seat to how much fun they have on the job.
Interestingly, many poor producers look at their paycheck as being the biggest motivator. The problem is that your sales production will fluctuate. You may go from who's who to who's he in the space of a year. For example, play golf more often with your best customers. Send out birthday cards to prospects or customers you care about.