Learning to learn efficiently is an incredibly useful skill that is required for survival in the self-taught path. Deciding what to learn next while making progress in your project in order to strategically unlock better decision-making at the right time before investing in the wrong path will compound over time and lead to increasingly improving skills like technical design, architecture, and project planning. The only major downside to this path in my experience is the increased probability of impostor syndrome which can be detrimental specially during the early years of your career and when you are trying to grow into the next level.