SWOT (Strengths · Weaknesses · Opportunities · Threats) gets a bad rap because it's used badly. Used right, it's a 30-minute reality check.
Honest version: be brutal. "Founders haven't sold B2B before" is a real weakness. "Big competitor launches similar product" is a real threat. Pretty SWOTs lie.
Next action
Turn the lesson into work.
Pick one concrete next step now, while the context is still fresh.