Do Things that Don't Scale
I'm not a huge PG fanboy, but this one is a nice gem. My fav. part is Stripe actually creating accounts on the spot when people said they'd use their product... i'm using that one next time!
Building a startup doesn't start with huge scale and automation. Just do everything manually and use that opportunity to provide insanely great service to your users/customers. Once you cannot manually do something, automate it.