Compare this verse to verse 4.
(Proverbs 10:4 KJV) He becometh poor that dealeth with a slack hand: but the hand of the diligent maketh rich.Here it is the “blessing” (1293) of the Lord that makes us “rich” (6238). There, it is hard work. Well, which is it? Might I suggest that it is both?
God gives the blessing because He is a loving God and controls all things. How many times have we seen people do the same things and get different results. As far as I can tell, I make coffee the same every time and it is different every time. I am not suggesting that God is dipping His finger in my coffee grounds. I am suggesting that there are so many ways that things can be influenced and we cannot tell. God can and does.
Also, we are expected to work hard because it is good for us. The Bible teaches that work is both a curse and a blessing. Work makes us stronger. Work makes us appreciative. Work is medicine for sloth.
So? Accept the blessing of God. Work hard. Bless Him through your attitude and actions.