Are you “stubborn? If so, it comes in two flavors: persistent and obstinate. Some think these are synonyms; but they’re really not.

Do you know which one you are? It matters…it really matters.

This short blog post by Paul Graham, one of the founders of VC fund Y Combinator, offers a commentary on the distinction, which may be the difference between success and failure. Are you “The Right Kind of Stubborn.”?