Confirmed. The only point that I can add from experience is to find partners or co-founders that are aligned with you. They need to share the same passion, drive, and moral compass or all of your hard work will be in vein. 

 Arguably, that’s the hardest part of them all. Finding a cofounder who won’t burn you. 

 Confirmed again. I was burned in the past and will forever be gun shy for the future. 

 Also speaking from experience, this is very true. Shared passion and product timing were core to success at the time. 

 (And yes, I didn’t walk away with the millions, so also burnt). Live and learn.