What keeps us from achieving the things we want or even set out to achieve? Science writer David DiSalvo (What Makes Your Brain Happy and Why You Should Do the Opposite) seems to like why questions—which I’m on record as opposing. He wrote an article for Forbes titled “The 10 Reasons Why We Fail,” which he describes as reflections on falling short—more precisely, why we fail despite ourselves.

Two of his reasons—the first and last, as it happens—really resonate for me based on my own experience and the experiences of friends and acquaintances.

 You Don’t Believe You Can Do It

Luke: I can’t believe it.
Yoda: That is why you fail.

The crucial part of Yoda’s dialogue with Luke is “believe.” The human brain is a powerful problem-solving and prediction making machine, and it operates via a multitude of feedback loops. What matters most in the feedback loop dynamic is input—what goes into the loop that begins the analysis-evaluation-action process, which ultimately results in an outcome. Here’s the kicker: if your input shuttle for achieving a goal lacks the critical, emotionally relevant component of belief, then the feedback loop is drained of octane from the start. Another way to say that is—why would you expect a convincingly successful outcome when you haven’t convinced yourself that it’s possible?

Believing you can do something is a precursor to intentionally changing or initiating a habit. If you start out believing you can’t do it, you will more than likely fulfill that prophecy.

You’re Confused about What to Do

Of all of these 10 ideas, this one is to me the most difficult because it plagues me almost constantly. Gearing up the cerebral feedback loop for achievement is one thing, but without a sense of focus and direction, all of that energy isn’t going to yield very much in the end. My experience has been that sometimes you have to let the energy flow for a while without too firm a sense of direction and see if focus emerges organically. Once it does, you can then nurture it into a more structured method for getting where you want to go.

Confusion abounds, especially when people think they ought to know what to do and where to go, but don’t. There are several ways to prime the pump to gain some clarity about what to do next. Often, however, we and our brains are so frantically busy going in whatever direction we’re going that we can’t slow down enough to realize we don’t actually know what the heck we’re doing.