Personal (adjective)

1. Relating to a particular person; individual.
2. Relating to one's private life, relationships, and emotions rather than to one's public or professional life.
3. Relating to human personality or character.

Origin:

Late middle english (as a noun): from old french, from latin personalis, from persona "person".

Examples:

1. She gave a very personal account of her experiences.
2. The letters contained a lot of personal information about his life.
3. The company has a policy of not discussing personal matters in the workplace.
4. Her approach to problem-solving is highly personal.
5. The book provides a unique and personal insight into the artist's life.