Thrown off balance refers to a feeling of being disoriented or destabilized. The opposite of this would be feeling balanced, stable, and centered. Antonyms for thrown off balance could be "in control," "stable," and "calm." These words describe a state of being that is grounded and secure, rather than unsettled and uncertain. When we feel in control of our thoughts and emotions, we are less likely to be thrown off balance by external challenges. Being balanced and stable requires practice and self-awareness, but it allows us to approach life with a sense of calm and confidence, even in the face of adversity.