Are you going to "give in and give up or get in and get up?" When you set your sights on a goal, how determined are you to acquire the knowledge and work the process to succeed?
This article on Arnold Schwarzenegger's career illustrates his success through belief in himself, followed by taking the actions needed for achievement. It's not a referendum on perfection, as we realize that Schwarzenegger, like all of us, had flaws. But it demonstrates how "the magic is in the work."
In my "Commonplace Book" of wisdom not knowledge, I added "the best dividends on the labor invested have invariably come from seeking more knowledge rather than more power" from David McCullough's "The Wright Brothers". The caveat follows that action adds clarity.