This puzzle has more steps than most puzzles, so you need to double-check all of the things MissKathy put in her spoiler post.

For example, do you have Dendrology level 3 and a lit fire?

What does your villager do (or say) when you try to get them to meditate? Do they shake their head or give other feedback? Watch for any messages that might give you an idea why they won't meditate.