Put meaning into all elements of the product.

Designing a good product is not enough. Having many functionalities is not enough. The important element is to give meaning into all elements.

Instructions

For every single functionality of your product, ask, “Why would the user do this?”
Having a lot of features is not enough. The user must have a clear reason to try them and use them.
Your product must contain a good motivational element at the very beginning. People avoid changing their habits and behaviors.