In Tai’s Accelerator Program (just to clarify I am no affiliate 🙂 he shares his personality type system he uses to categorize people. It is called the P.A.S.E System each letter stands for a certain trait. Here they are:
Practical = Logical and accountant type people.
Action = People with a lot of energy. they are eager to start new things but have difficulties sticking to them.
Social = People for whom social contacts are the most important, they love to chit chat.
Emotional = People who get emotional quickly, they are often fear based.
We all have traits of these four but in a different order so for instance one might be very social. gets angry quickly and takes action only after endless persiuasion. Therefor he would be Social first, then Emotional, then Practical and at the end Action orientated . Personality Type: SEPA
The best way to start using this technique is by using it on yourself by getting honest feedback from others.