Not a startup in the typical sense, but I created a side project maybe 10 years ago that had great traffic growth and was signing up users. It was basically a

Not a startup in the typical sense, but I created a side project maybe 10 years ago that had great traffic growth and was signing up users. It was basically a content website so I was using Wordpress and MANY plugins without really understating how the worked together. Traffic kept growing and I was getting pretty excited. My other (and current) business was growing more so I focused on that. After a few months I checked back in and the other site had actually broken in an update of Wordpress and been getting zero traffic for months and didn’t ever recover once fixed. While I would like to say that the point of failure was the site breaking, the actual point of failure was me not being able to focus on it like I should have. Related, but had I given it the focus it deserved, my other business might not have been as successful and my life would likely look incredibly different now.