What is it?
It's knowing how to engage stakeholders, to team up, appreciate values, model development, plan responsibilities, empower co-workers, adapt in turbulence, and how to deliver value.
How does it grow?
Project know-how grows by reflective practice, that is, by your actually doing projects and thinking about your experience.
You can inform your thinking these days by one or more of six great perspectives on project know-how: Business, Systems, Kaizen, Plan-driven, Agile, and Design.
You can use AI too (and most any AI tool you choose has been trained on one or more of these six).
How can I grow my own?
From your own action and thinking! By doing your projects and reflecting on them from one of the six perspectives. Or, better yet...