Eve Plumb has advice for young Hollywood stars.

Eve Plumb, who played Jan Brady, says one rule helped her avoid traps in Hollywood.

Eve Plumb told Fox News that saying no is very important for actors and people. Her parents made sure she had time off and did the right things. She still says no to things she doesn't want to do.

'The Brady Bunch' star Susan Olsen didn't like her character.

The "Brady Bunch" cast included many famous actors and actresses.

Eve Plumb was cast in "The Brady Bunch" when she was 10 years old.

Eve Plumb said her real life at home kept her grounded.

Her parents' support was very important in the entertainment industry.

Eve Plumb hopes all child actors have good parents to protect them. She also wants them to know that fame can be hard to handle.

Watch Eve Plumb talk about her Hollywood rule.

Eve Plumb said it took her a long time to adjust to not being a child star.

It took Eve Plumb a long time to realize she wasn't a kid anymore. She had to deal with not getting every role she auditioned for. She had to learn to handle disappointment in Hollywood.

The "Brady Bunch" cast posed together in 1969.

'Brady Bunch' star Maureen McCormick shares her secret to a successful marriage.

Eve Plumb wrote a memoir about her life and career.

Eve Plumb decided to share her story now because she felt it was the right time.

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Eve Plumb decided to write her book because many people asked her to share her stories. She finally felt ready to do it.

Writing her book wasn't all happy memories.

Eve Plumb's book is about different parts of her life and career.

Eve Plumb found it hard to write about sad things, like the death of her dogs and family members. Grief is always changing and can hit you when you least expect it.

Eve Plumb says learning to say no helped her avoid problems in Hollywood.

Eve Plumb started acting at a young age and appeared in many TV shows and commercials.

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Eve Plumb has had a long and successful career in TV and theater. She has also worked as a visual artist.

Eve Plumb's book is available now.

Stephanie Giang-Paunon is an entertainment writer for Fox News.