Acumen is the ability to make good judgments and quick decisions. It includes the skills of astuteness, shrewdness, acuity, and sharpness. It embodies rational, emotional and conceptual thinking.
Rational thinking is essential to maintain a fit, healthy and long life. Read for knowledge and enjoyment, work crossword puzzles or play challenging games. Learning is a lifelong activity and rational thinking is the reward you will receive.
Emotional thinking is essential for a healthy and long life. Taking the time to enjoy a sunset, cry at a sad movie or a moving experience. Laugh at your own shortcomings, hug your family members as often as possible, help people in need even if they are unaware of your act. Be happy.
Conceptual thinking is a process requiring factual analysis and equanimity (e.g. emotional balance and stability) in order to create workable solutions to life's challenges.
It involves strategic thought about our physical fitness (capacity), our relationships and our lifestyle. It is about achieving our life-long goals for health, wealth and wisdom.