This document discusses strategies for sales organizations to engage customers earlier in the buying process when customer needs are still being defined. It finds that customers now do much of their own research before engaging suppliers, often completing over half the purchase decision process alone. It identifies four behaviors of top sales performers: 1) conducting non-traditional customer due diligence, 2) personally owning lead generation, 3) leading with insights that challenge customer assumptions, and 4) using social media as an influential channel. These "challenger" representatives shape customer demand through pre-funnel engagement like teaching, rather than just reacting to defined needs. The key is for sales to teach customers where they learn during early needs assessment.