I'm 80 and worked at the same company for almost 60 years. Here are the biggest lessons I learned about being successful at work.

Linda Zierolf still works full-time for a company she started at six decades ago.

Linda Zierolf

• Linda Zierolf, 80, has worked at an industrial wholesale company for 56 years and plans to continue.
• She preferred working at a smaller company over moving to a bigger one with better pay.
• Technological changes and women entering the office have transformed her work over the years.

This as-told-to essay is based on a conversation with Linda Zierolf, 80, who lives near Dayton, Ohio.