The frontal lobe (the brain’s center for planning and emotional regulation) undergoes its final major growth spurt in your 20s. It is the best time to "wire" your brain for the person you want to be. Waiting until your 30s to "get serious" means trying to change habits that have already begun to set.
The most important decision you will ever make is who you choose to partner with. Jay argues that you shouldn't just "settle down" when you hit 30, but rather start dating intentionally in your 20s to understand what you truly need in a lifelong partner.
Here is a short post summarizing why these years are so critical:
