What's the Biggest Mistake You Made in Your First Year of GovCon?

Everyone in government contracting has a story about the bid they wish they'd never submitted. Common first-year traps: bidding on everything instead of building a pipeline; skipping sources-sought/RFI stages where influence is cheapest; treating the capability statement like a brochure; ignoring teaming until it's too late.

Share yours. What mistake taught you the most — and what would you tell your day-one self?