I’m a strong proponent of describing our leanings by means of our natural temperament BUT there can be a tendency to excuse behavior on the same basis.
Because you are hard-wired a certain way – easy-going Phlegmatic, detailed Melancholy, outgoing Sanguine, or hard-driving Choleric – is not an excuse for not evolving your behavior.
The dictionary defines EVOLVE as “to develop or achieve gradually” — and this I maintain should be happening no matter what your temperament.
Phlegmatics need to fight laziness — to evolve would mean to become generally more active over time through work and discipline. Melancholies tend to over-analyze and criticize — to evolve would mean putting these tendencies to good use in helping others actively. Sanguines can be disorganized and messy — to evolve would mean implementing systems of organization that they would follow regularly. Cholerics have little patience with others and care little about their feelings — to evolve would mean taking others’ thoughts and feelings more into consideration.
As an introverted Phlegmatic I’ve tried to evolve; while being more outgoing still tires me I no longer totally dread it. I encourage each of us to evolve by changing behaviors over time.