When managing a project, it's easy to feel a sort of ownership over the product.
Easy yes, but a real mistake too. Because it’s not your product, but rather that of the client.
What is key is the deliverable. Keeping the focus on the end product is essential, because it's easy to get caught up in the process needed to create that product.
Let me give you an example, albeit an expensive one.
An engineer on one of my teams was working to create an interface between two databases for a client. He was good. Very good in fact.