This is a good request. Charles Dickens really does show that certain things are priceless. The contrast between Ebenezer Scrooge and Bob Cratchit cannot be missed.
Ebenezer Scrooge is a wealthy man who cares little for Christmas or even for people. All he really cares about is the bottom line. From the point of view of monetary success, Scrooge has done extremely well, just like his deceased business partner, Jacob Marley. Bob Cratchit, on the other hand, is poor. He really has nothing and even his sick son, Tim (Tiny Tim) is sick and the family does not have enough money to take care of him.
However, the Cratchit family has something else. They are filled with love, generosity, joy, and hope - things that Scrooge knows nothing about. The point is that money, business acumen and financial skills cannot buy happiness. Happiness is priceless. In time, Scrooge begins to understand these things.
Finally, we can say that the story can be seen as a commentary against the greed of the industrialization of England during the mid-1800s.
Your question is too general and you may have forgotten to put a reference of which of Dickins' stories you are referring too.
But, it seems as if Charles Dickens' "important thing" in life may be miniscule, which in turn forces him to try and convince readers, females in particular, that size does not matter. It does not matter many persuasive techniques he uses to get his point across, we,the readers, all know that the "important thing" in life can be measured and having more of it is better.