Nothing!
This principle — the practicality of happiness — was first impressed upon me some years ago during a meeting of the Knoxville Baha’i assembly.
We had decided to send a gift as a token of appreciation to a wonderful lady who had provided heroic service to the community.
An assembly member named Betty suggested flowers. “She loves flowers,” said Betty. “They will make her happy!”
“Well, yes, they will,” another member replied. “But would it not be better to give her something practical?”
Betty thought about this and said, “What could be more practical than being happy?”
We sent flowers, and ᴇᴠᴇʀʏᴏɴᴇ was happy.