"The gap" is probably what allowed humans to evolve complex solutions. Rather than just bang things together, they had to think of how they would do it before they even began. That seems to be the differentiator between other animals and humans: we can shave a lot more yaks.
I have spent a year on a project that is not really much closer to completion than when I started. But I have been shaving yaks like a motherfucker. Research, design iterations, acquiring tools, making jigs, creating space. (I have also wasted a lot of time due to coping with ADHD and depression)
I could have done it sooner if I had compromised more. But I wasn't yet experienced enough to know what compromises to make and still end up with an acceptable solution. Many things have come up that I didn't expect in my initial dream. If I'd known then what I know now, I would have dialed things down.
Ignorance amplified my ambition, and my ambition exceeded my grasp. But if you never give up, it's not sabotage: it's perseverance. And I refuse to quit. My grasp is getting stronger. I'm moving forward faster, getting better. So my ambition (in this case) is a stupid form of self-improvement. It turns out I'm not building a camper. I'm building Me.