Don’t finalize the logo before you come up with a business plan that works.
Don’t spend a lot of time thinking about your vacation policy before you have a product that people actually want to buy.
I am still noodling over a longer post mortem write-up for the fact that my startup didn’t get off the ground. But part of the reason, one of many, is that I forgot to think about the big questions all the time and so often thought about the smaller things.
Sure, sometimes it’s fun to work on the logo and you need a break from the business plan. But too often I focused on the logo (or the email system or ….) before I focused on the product. I feel stupid in hindsight, but then again everything is easier in hindsight.