Instead of focusing on best practices, focus on...

Susan Cramm recently wrote an article on best practices on the HBR website. In the article, she points out that:

In reality, "best practice"...
...isn't always the "best"
...often isn't feasible
...is sometimes unachievable

Instead she recommends focusing on...

Adapting best practices...
Defining quality processes...
Having experienced people...

Checkout the full article for details.