Competition
Salespeople who are motivated by competition do not only want to win, they want to be better than their competitors. The result is they make no distinction between a sales person from a rival company and a co-worker. They are fair, however, and their performance will also inspire their sales team.
Ego drive
The ego of these top salespeople is the focal point of everything. They want to be the best and get the glory personally. Team performance means nothing to them. You can however motivate these salespeople by making them mentors for young salespeople. They are exhilarated when younger salespeople admire their expertise.
Love of success
This is the motivation that is most desirable to drum into team thinking, but unfortunately team thoughts rarely enter the head of top salespeople. Any salesperson who loves success feels motivated by the task at hand alone. If they achieve a goal, their sights are automatically set a notch higher. Colleagues' success does not bother them, since the main thing is that the task has been accomplished. Always ensure there are enough challenges to stretch your salespeople.
Service strength
The strength of salespeople who have this inner motivation is the ability to create and build on client relationships. They are constantly on the look-out for the optimum uses for their clients. These are the ones who express with as much understanding as possible what it is the customer actually needs and then goes out of their way to accomplish this. In the sales team, this type of salesperson is often the work horse who does the less well-liked tasks, because these are the ones which are complicated and drawn out. You need to recognise the fact that your top salespeople fulfill this role.
These are the key motivators and attributes of successful sales people. Managers who hope to further develop their skills of motivating and identifying successful salespeople can attend pertinent management training courses.

Concluding sales negotiations
Self motivation
Self discipline
Empathy
Competition
Ego drive
Love of success