I'd advise keeping things in context. Milestones and obstacles both seem monumental up close, but if you can keep fixed in your mind the larger context they exi

I'd advise keeping things in context. Milestones and obstacles both seem monumental up close, but if you can keep fixed in your mind the larger context they exist in, you'll have an easier time staying steady. No matter what happens today, there's still work to be done and ways to do better tomorrow. No matter how great or poorly your startup turns out, you have decades of life ahead of you that can reverse or continue the results. You've made a choice to put your all into a project; it doesn't matter if hurdles are popping up. You can't change the difficulty of the playing field, you can only improve your skills as a player. So keep going until you win, or until you can't afford to keep playing. Regardless of which occurs, you'll be better off for it.