Possible Clues:

• It is said to be more than wealth
• Well being; a toast
• Fit condition
• Well, one should be in this, if it's good
• Might be just as well that one gets drunk
• One's most valuable possession, perhaps
• Condition of lake in moorland
• 10 18's great creation
• It can be improved by 39-Across
• Toast provides physical well-being