Thrifty or Frugal

Lately I've been reading quite a lot of blogs with the word "frugal" in the name which led me to ask thrifty or frugal?

Thrifty definition:

"using money and other resources carefully and not wastefully"

Frugal definition:

 
"sparing or economical as regards money or food"

So the same thing really, now all I need to do is figure how to BE thrifty or frugal!

Definitions from Oxford Dictionaries