Belief is the ignition switch for capability

Schwartz's opening claim is blunt: belief triggers the power to do, meaning the honest expectation that you can accomplish something is what actually mobilizes the effort, creativity, and persistence needed to accomplish it. Without that belief, ability sits dormant, because nobody applies serious effort toward something they've privately decided is unlikely to work.

He illustrates this with the pattern he saw repeatedly among salespeople: two reps with comparable skill and product knowledge would produce wildly different results, and the gap traced back to one believing bigger sales were possible for them and the other quietly assuming they weren't.

The mechanism isn't magical thinking — belief doesn't substitute for competence — it's that belief determines whether competence ever gets deployed at full strength. Someone who doesn't believe in the possibility of a big outcome will unconsciously undershoot, hedge, and quit early, producing a self-fulfilling small result.

Takeaway: raise the belief first — the effort and skill tend to follow it, not precede it.