The blue apple test: Speak out the sentence "I'm a blue apple". See how it feels. It likely makes you laugh because it's absurd. That's how beliefs that feel absurd feel like.

If you have that reference feeling you can speak a sentence like "I'm not worthy of success" and see how that sentence feels like. If it feels more true, than you believe it on some level even if as an rationalist you would never ever say that you believe "I'm not worthy of success".

If the beliefs that actually drive your actions are radically different than the beliefs towards which you admit to when thinking intellectually about them, you are likely going to be plagued by akrasia.

On LW we have the alief/belief distinction. We might say that you don't believe "I'm not worthy of success" when it fails the blue apple test but you just alieve it. Most people don't distinguish the two and only deal in aliefs.

Having a conversation where you actually express your alives and express them can be interesting.