Become an expert: If you read about a topic for 15 minutes a day for one year, then you will probably know more about that topic than 99% of people in the world by the end of that year. What do you want to be an expert in? What would you like to teach your kids? What do you want to know more about? Can it translate into a side hustle? Just a little bit of discipline and focus can go a long way.
Want to publish a book? You might be too undisciplined and lazy. Make a change. Quit making excuses. Read this post by Chad Allen: “How to Get a Book Published”
Try going an entire day without saying one negative word (yes, this includes complaining). Solomon was no idiot: “The tongue has the power of life and death, and those who love it will eat its fruit” (Proverbs 18:21 NIV).
Theology: There is an important distinction in theology that can help make sense of lots of different issues. It is the distinction between “common” and “special/saving” grace. Both of the following articles are brief reads but extremely helpful. Why not be an educated Christian?