When you are a one-person show, identifying the high-value tasks is easy: all of them are. Because you are the only one executing them, what’s the point of categorizing them?
Once you start adding a CTO, VPs, Directors, and team members, things get more complicated. You will try to define the tech stack, and your CTO will push back. After all, you hire them to do that job.
Where is more valuable for you to spend your time on? The common answer is to identify tasks that no one else in your team can do. But if there are such tasks, you are missing hiring someone to tackle them.
The highest-value task you can do is simple: don’t be a blocker.