[Currently detecting a wave of self-doubt growing in your mind. It is unnecessary. You need only prove your worth through your actions. You have achieved this over and over again by the system’s estimate.]
'Geez-Louise, kid, even Triple-A thinks your way too negative about this,' Chiron sighed. 'Listen, self-deprecation is fine for some much-needed introspection, but there comes a point where you’re just looking for excuses not to be happy. And with life being as finite as it is for people in our profession, being sad over nothing’s just dumb, you know?'
[Also, an appropriate colloquial expression comes to mind; Fake it until you make it.]
Sam’s spirits lifted a little thanks to their encouragement, which happened so rarely that the positive reinforcement boost seemed to double or triple in value. Triple-A was sounding less and less like a computer program with each passing day too, and Sam realized he liked that about the system.