This isn't just great advice for startups but for any business. Beware of vanity metrics that make you feel like you're big and bad. "I have hundreds of people interested," sounds great in theory. How many of those you've converted, is the more important number.
I always remind my clients that if they start believing their own bull$hit, they're setting themselves up for failure.
In my own practice, I'm not immune to this either. I have to constantly remind myself not to inflate who I am and where I'm at. It might feed the ego but it won't do anything to move the needle on profitability. Your ego can be the death of your business so be careful of the stories you tell yourself.
Stay real. Stay humble. Stay hungry.