Yes, people can and do consider themselves as "a bad person" from time to time. It's not uncommon for individuals to have moments of self-doubt, self-criticism, or guilt, where they may feel like they have made mistakes or done things they perceive as wrong or harmful. These feelings can be triggered by various factors, such as personal failures, negative actions, hurting others, or not living up to their own moral standards.
It's essential to remember that self-perception is subjective and can be influenced by various factors, including one's mental state, personal experiences, and the way others may react to their actions. Some people might struggle with self-esteem issues, depression, or anxiety, which can contribute to negative self-perceptions.
In such cases, it's crucial to seek support from friends, family, or a mental health professional to help gain perspective and work through these feelings constructively. Everyone makes mistakes and has moments of imperfection, but it doesn't necessarily define them as a whole person. Growth, learning, and positive changes are always possible.