Doubt

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"Holding people away from you, and denying yourself love, that doesn’t make you strong. if anything, it makes you weaker. Because you’re doing it out of fear.” 

— Sarah Dessen

There is nothing more dreadful than the habit of doubt. Doubt separates people. It is a poison that disintegrates friendships and breaks up pleasant relations. It is a thorn that irritates and hurts; it is a sword that kills.”

— Siddhārtha Gautama