Knowledge is power. You should never ever stop learning. If you ever think you know it all, you are a fool. The world is full of people who have encountered different things, experienced different sights, and have mastered different crafts than you. The amount of stuff to fill your brain is vast and the sources, including books, YouTube, and people interactions are limitless.
The more you know, the more informed you are when making decisions or even embarking on new projects. This habit is probably the easiest to learn because most people do this already. It’s important to stay openminded and have mental flexibility. When someone has something new to offer, listen to it. If someone has a different experience to share, listen to it.
Like I said earlier, if you ever think you know it all, you’re a fool.