The “world” or “others” is the collective conscious and unconscious “mind” - the mind is actually one, we’re all (relative) aspects of the universal (absolute) mind. So, when you assert yourself on the world through activities, you’re essentially telling the world what you are and defining your ego boundaries, what separates “you” and “other”. If you have “weak” ego boundaries (mental, psyche), and fail to assert yourself on the world, the “other” egos/minds who have a stronger sense of “self” will project what and who you are onto you through having already defined who and what they are.