When Dave Berke was a kid, he imagined himself flying an F-18 off an aircraft carrier.

By the time he retired as a US Marine officer in 2016, he had not only done that, but he’d also flown an F-16, F-22, and F-35, taught at the elite Top Gun fighter pilot school, and served a year on the ground alongside Navy SEALs in the 2006 Battle of Ramadi as a forward air controller.

Today he’s a member of Echelon Front, a leadership consulting firm started by two of those SEALs, Task Unit Bruiser commander Jocko Willink and one of his platoon commanders, Leif Babin.

Berke has spent the past year sharing lessons from his 23-year military career, and we asked him what insights were at the heart of his leadership philosophy. He shared with us two lessons he learned as a teenager, long before he ever saw combat.

They’re lessons he said became not only the foundation of his service, but his entire life, and they’re ones he’s had reinforced repeatedly.

 

Read the whole story from Business Insider.

Featured image courtesy of DVIDSHub