There are perhaps different moats and I'll now elaborate based on personal experience…

Step 1/

Develop the skill to focus on a single thing for an extended period of time while working on Your metacognition. Metacognition as being able to reflect on Your own thoughts and iterate on new ideas.

Step 2/

Understand how to parallelize Your work. Parallelize as in understanding how to make multiple agents work on a given project/idea at the same time.

Final Step/

Be disciplined and create a log of what You learn and understand that the natural result of Your iterations should be a SYStem that You can follow to get the desired result across multiple domains.