Everything is changing all the time in the world of startups. That’s OK as long as you acknowledge that in your planning process. Your plan should help you adapt to the ever changing landscape vs. getting fixated on “the plan.” Plans should identify opportunities and problems to solve but be flexible on the details—timing, resourcing, and goals.

Let yourself become more ambitious—figure out the most interesting version of where what you’re working on could go. Then talk about that big vision and work relentlessly towards it, but always have a reasonable next step. You don’t want step one to be incorporating the company and step two to be going to Mars.