No, it is not true that everyone hears a voice in their head telling them what to do. The experience of having an inner voice or engaging in inner speech varies from person to person. While many individuals do experience some form of inner speech, not everyone has a voice that tells them what to do or guides their actions.
Inner speech is a common phenomenon, but its nature can differ significantly among individuals. Some people may have a strong and constant inner monologue that seems to provide guidance or instructions, while others may have a more sporadic or less prominent inner voice. Some individuals might primarily think in visual or conceptual ways rather than having an auditory inner voice.
The way people process their thoughts can be influenced by various factors, including personality, culture, language, and cognitive style. Some individuals may have more introspective tendencies, leading to a more pronounced inner voice, while others may not rely on verbal thought as much.
It's essential to recognize that the human mind is incredibly complex, and there is a wide spectrum of individual experiences. While inner speech is a common mental process, its specific characteristics can vary greatly from person to person. If you find your inner voice to be excessively intrusive, distressing, or interfering with your daily life, it might be helpful to discuss your experiences with a mental health professional to gain further insight and support.