Psychometric testing, using a well-respected and validated personality questionnaire is a great way to assist with gaining personal insight. It's also one of the tools I use in workplace mediation and coaching to assist with self-awareness. I am registered with the British Psychological Society to administer one of the ‘big five' personality tests (NEO-PI-3) and EQ-i 2.0 which assesses emotional intelligence.
The NEOPI3 inventory measures 36 fascinating areas of an individual's personality: anxiety, anger, depression, impulsiveness, vulnerability, warmth, gregariousness, assertiveness, activity levels, excitement seeking, trust, straightforwardness, altruism, compliance, modesty, tender-mindedness, competence, order, dutifulness, ambition, self-discipline, deliberation and openness to fantasy, aesthetics, feelings, actions ideas and values. It allows an individual to understand how their unique personality compares with the UK Professional and Managerial population.
Emotional intelligence levels from the EQ-i 2.0 tool can also be compared to a leadership ability providing insights to assist with a client's leadership and managerial abilities.