Pr 31:18 She perceiveth that her merchandise is good: her candle goeth not out by night.
Here she is reaping the reward of her hard work.
The last part of the verse says she was up at night doing things. She obviously gets some sleep because the earlier verse said she rises early.
So does that mean we can stay up all night and sleep all day? Not according to the earlier verse. She gets the sleep her body needs but no more. She is not lazy.
We must also be careful how we use our free time. All of our time belongs to the Lord. Sometimes we forget that. What ever we are doing is for Him. Are we glorifying Him every minute of our day?