According to licensed therapist De-Andrea Blaylock-Solar, MSW, LCSW-S, CST, the main thing to understand with type A people is that they have a “take charge” spirit, which lends itself to that competitiveness, strong work ethic, and yes, impatience. “They do often have a self-starter within them, where they’re able to run businesses effectively—or if they work within companies, they’re able to work independently and work very efficiently,” she explains.