I made the mistake of working at the world's largest telescopes and now show classic health degradation that is associated with that biologically toxic environment.

The biggest mistake that I made in management was not recognizing workplace poisoning of the staff that I supervised.

I made the mistake of using my earned sick time at the W. M. Keck Observatory for essential surgery. When I returned to work the management team demanded my resignation numerous times, citing my essential surgery as a reason. The W. M. Keck Observatory taught me that using earned sick time in the USA may put your future employment at significant risk.

With the benefit of hindsight, the biggest mistake that I made in life was working in the toxic field of high altitude astronomy.

Mistakes are the foundation of achievement.

Are you going to judge a person's character by their mistakes or by their achievements?

I can guarantee you that my mistakes far outweigh my achievements because a single achievement is the fruition of many mistakes.

The biggest mistake that I made in life was working for biologically toxic employers. The second biggest mistake was expecting that the modern healthcare system could fix my occupational diseases.

The biggest mistake that I made in high altitude astronomy was not realizing the onset of sickness that I saw at the first astronomical observatory were the initial signs of High Altitude Observatory Disease (HAOD).