Persistence Posted on 13th December 201513th May 2021 by ThePD (The Project Definition) Persistence is a fact of continuing in an opinion or course of action in spite of difficulty or opposition. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in General and tagged management. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.