To pass this week's challenge, you have to spend 10 minutes in focused thought.
Some people might call this meditation, but I like to think of it as focused thought. The word "meditation" comes with a lot of baggage, much of which I don't want to deal with, but there is a significant benefit to spending time in focused thought.
Sit somewhere comfortable and quiet where you won't be distracted for 10 minutes. Set a timer and then forget about it. Then close your eyes and just think about something. Anything will do. You could think about:
Don't worry if you find your mind drifting from the topic that you're focusing on. Just refocus your mind back to the original thought and keep going. After a while, you'll start to wonder if you goofed up when you set the timer. Resist the urge to check it and trust that you did it right the first time.