The salesman David H. Sandler, together with a psychologist colleague, used some of the theory of transactional analysis to develop Sandler Training. According to the Sandler Selling System, a buying prospect must be emotionally involved in the sale; the “pain” of not having the product has to affect them on an emotional level.

When we make buying decisions, we like to think that our ego’s “adult” state is the one that’s working the hardest, that the logical, analytical, rational part of our behavioral framework weighs both sides of the argument and comes back with a solution.

However, Sandler recognized that neither the “adult” nor the “parent” state is at work until the “child” wants the product. Many of our buying decisions originate in the ego’s child state, where our inner 6-year-old tells us they want something without delay.

There are more sales techniques, methodologies, and frameworks than one could count. Most of them probably work when they are correctly applied, and then there are some that might even hurt the business rather than help it.

In the end, they are like exercise—the best approach is the one that works for you.