Did Seven Years' War success mislead Britain?

Were Seven Years' War victories false positives for later British strategy?

Partly, but they also pushed Britain to value professional officers, experienced sailors, and sound ships as the basis for future success.

Victory created some false confidence, including the belief that British forces could repeat the same global strategy by national character alone. Later mixed results exposed the limits of that assumption. The more durable lesson was institutional: success required experienced sailors, capable ships, and a highly trained officer corps. Over subsequent wars the Royal Navy improved those foundations until professional experience, rather than presumed innate superiority, made the fleet exceptionally difficult to defeat.