There are four types of temperament in psychology, which are: choleric, bloody, mucous, and depressive.
Bloody: People with this temperament are lively and active, sociable, quick in thinking, quick and changeable in mood, rich in expression, but not deeply experienced. They are adaptable and full of life, but they lack persistence in doing things and are easily distracted. Choleric: People with this temperament are enthusiastic, straightforward, energetic, brave and positive, but they are easily agitated, short-tempered, and have high excitability and weak inhibition. Mucous Temperament: People with this temperament are quiet and patient, but they are slow to react and inflexible. They have rich imagination, a serious attitude, moderate communication, do not make empty talk, are not easily emotionally excited, are not easy to lose their temper, are not easy to show emotions, can be autonomous, and do not often show their talents. Depressive temperament: People with this temperament are careful and cautious, delicate in feelings, withdrawn, good at thinking, suspicious, and lack decisiveness. They are emotional, introverted, sentimental, weak and tired, slow and intense in emotional onset, sensitive to external stimuli, but slow to react, slow in movement, cautious, not good at interacting with others, timid, withdrawn, timid, and easily cowering in case of difficulties or setbacks. 
Different temperament types, there are different representatives, as follows:
Choleric qualities: representative figures such as Nietzsche, Alexander the Great and Navasis. They are characterized by energy, confidence and drive, and are enthusiastic and optimistic, and are typical of action.
Mucus: Representatives such as Leonardo da Vinci, Bill Gates, and Barack Obama are characterized by their calmness, tactfulness and calmness, clear thinking, logical rigor, excellent communicators and problem solvers.
Bloody: Representatives such as Voltaire, Winston Churchill and Mark Twain, who are characterized by liveliness, boldness and excitement, optimism, good popularity, and a love to try new things and challenge themselves.
Depressive Qualities: Represented figures such as Shakespeare, Queen Victoria, and Emily Dickinson, who are characterized by introversion, sensitivity, hesitation, and emotional richness, focusing on inner experiences, and sometimes needing attention and encouragement from others.
Each different temperament type has corresponding personality traits and strengths and weaknesses. Once we have identified the type of temperament of an individual, we can use it as a reference to help choose a specific career and direction.