Developing buy-in on a project with internal resistance can be daunting, but I would do it this way:
Understand Concerns - Begin by really listening to the naysayers. Listen to their concerns, and once they finish, openly address them-always showing that you value their opinion.
Highlight the Value - Speak clearly about the value of the project, highlighting how it aligns with business objectives and how it will benefit positively.
Involve Stakeholders Early - Engage key people early. This makes them feel part of the plan and allows them a contribution opportunity, which often culminates in more buy-in.
Demonstrate Quick Wins - Provide quick, initial wins that show the promise of the project and win over those who are doubtful.
Be Transparent - Reveal the risks and challenges clearly but also provide solutions for how to address them. Transparency builds trust and credibility.
Build on Champions - Identify champions within the company who will assist in promoting the project and selling others on its value.
By meeting the concerns head-on, demonstrating worth, and developing trust, resistance can be conquered and buy-in established for the project.