In my experience, it's not just prompting that needs to be figured out, it's a whole new workstyle that works for you, your technologies and even your current project. As an example, I write almost all my code functional-programming style, which I rarely did before. This lets me keep my prompts and context very focused and it essentially elminates hallucinations.

Also I started in the pre-agents era and so I ended up with a pair-programming paradigm. Now everytime I conceptualize a new task in my head -- whether it is a few lines of data wrangling within a function, or generating an entire feature complete with integration tests -- I instinctively do a quick prompt-vs-manual coding evaluation and seamlessly jump to AI code generation if the prompt "feels" more promising in terms of total time and probability of correctness.

I think one of the skills is learning this kind of continuous evaluation and the judgement that goes with it.