Persistence is probably the single most common quality of high achievers. They simply refuse to give up. They longer you hang in there, the greater the chance that something will happen in your favor. No matter how hard it seems, the longer you persist the more likely your success.

Persistence is probably the single most common quality of high achievers. They simply refuse to give up. They longer you hang in there, the greater the chance that something will happen in your favor. No matter how hard it seems, the longer you persist the more likely your success.
—Jack Canfield