Products with higher user engagement have the potential to grow faster than their rivals.

Habit-forming products alleviate users' pain by relieving a pronounced itch.

Instead of relying on expensive marketing, habit-forming companies link their services to the users' daily routines and emotions.

You'll often find that people's declared preferences - what they say they want - are far different from their revealed preferences - what they actually do.

Products with higher user engagement have the potential to grow faster than their rivals.

Reducing the thinking required to take the next action increases the likelihood of the desired behavior occurring unconsciously.

Fogg states that all humans are motivated to seek pleasure and avoid pain; to seek hope and avoid fear; and finally, to seek social acceptance and avoid rejection