According to Free Trait Theory, we are born and culturally endowed with certain personality traits — introversion, for example — but we can and do ac… - Susan Cain

Love is essential, gregariousness is optional.

If you’re an introvert, find your flow by using your gifts. You have the power of persistence, the tenacity to solve complex problems, and the clear-sightedness to avoid pitfalls that trip others up. You enjoy relative freedom from the temptations of superficial prizes like money and status. Indeed, your biggest challenge may be to fully harness your strengths. You may be so busy trying to appear like a zestful, reward-sensitive extrovert that you undervalue your own talents, or feel underestimated by those around you. But when you’re focused on a project that you care about, you probably find that your energy is boundless.
So stay true to your own nature. If you like to do things in a slow and steady way, don’t let others make you feel as if you have to race. If you enjoy depth, don’t force yourself to seek breadth. If you prefer single-tasking to multitasking, stick to your guns. Being relatively unmoved by rewards gives you the incalculable power to go your own way. It’s up to you to use that independence to good effect.

This book is about the melancholic direction, which I call the “bittersweet”: a tendency to states of longing, poignancy, and sorrow; an acute awareness of passing time; and a curiously piercing joy at the beauty of the world. The bittersweet is also about the recognition that light and dark, birth and death — bitter and sweet — are forever paired. “Days of honey, days of onion,” as an Arabic proverb puts it.