At the start of the year, a trend is picking up across different spaces, especially among entrepreneurs, productivity fans, and students.

It’s called “The Great Lock In,” and it runs from September through December 2025.

The idea is simple: commit four months to reaching one big goal. The trend already has more than 10,000 posts and is still growing, likely to last for weeks. It’s the perfect moment to join in, even by creating accounts focused only on this challenge, and showing how your app can help people hit their goals.