Enough: as much as is needed.
I poked fun at Walt Whitman the other day for being, um, excessively excessive. But then I ran across this bit of his, and it struck me as a perfect example of a thankful heart:
"I have perceive’d that to be with those I like
To stop in company with the rest at evening
To be surrounded by beautiful, curious, breathing, laughing flesh,
May your Thanksgiving be blessed.