Mantras have been really helpful with this.

Use them to challenge that narrative. You're an effective human all of the time, first of all. And that's true as long until your metabolic and neuroelectric activty stop altogether in which case you are an effective corpse all of the time.

Right at that part of the comic where the text grey's out, that's where the effect of the mantras kicks in naturally.

Like I don't know you or what you want to do or what you do, but I know you can take five minutes in the morning to tell yourself how effective you are, even if you don't believe it, you will find yourself thinking so much less. It won't feel like such a heavy lift to get started on something, because you've already sat your subconscious down and said "listen bitch, I'm effective as fuck." It's not going to challenge you back as much. That your subconscious. You tell that bitch what's true and false, literally.