The core idea of "Mini Habits" is that small, consistent actions can lead to significant results over time. By focusing on tiny, manageable tasks, individuals can bypass the resistance and procrastination that often accompany larger goals. This approach makes it easier to start and maintain new habits, ultimately leading to substantial personal growth.

Guise explains that traditional strategies for habit formation often fail because they require a high level of motivation and willpower. Mini habits, on the other hand, are so small that they don't trigger the brain's resistance to change. This makes it easier to take the first step and build momentum, gradually rewiring the brain for success.

One of the key themes in "Mini Habits" is the importance of consistency. By committing to small, daily actions, individuals can create a sense of accomplishment and build a positive feedback loop. This consistent effort, no matter how small, is more effective in the long run than sporadic bursts of intense activity. The book highlights how this principle can be applied to various areas of life, from exercise and reading to writing and healthy eating.