Needle Strategy applies behavioral insights to help clients in three ways: 1) They helped a major publisher increase declining magazine subscriptions by allowing readers alternating access to content aligned with their aspirations. 2) They helped a large payroll company encourage digital transition by introducing incentives while lowering the ability barrier, resulting in a frictionless digital overhaul. 3) They are proposing a system for a project encouraging exercise that tracks and rewards movement not with prizes but donations to charities, appealing to internal motives rather than just tangible rewards.