Other useful resources

BJ Fogg - Habit Design: Designing health behaviors.

Talking to Humans: Practical how interview and get the most out of your user segment research.

Steve Blanks’ customer discovery videos: Building a startup, understanding the problem, engaging customers, asking the right questions from customers, interview best practices, and empathy building:

Understanding the problem

Asking the right question

Engaging the customer

The multiperson interview best practice

Avoiding pitfalls

Customer lies

Pay attention to outliers

Customer distracts you with their opinion

Customer empathy