If you can master these four principles, you are well on your way to successful user adoption in SharePoint. IT projects are time consuming and capital intensive. Make sure you are investing in, and devoting enough of your project budget to, user adoption. Without strong user adoption, your project will fail, and you will find yourself back at the drawing board. Even the best tool in the world cannot be successful if no one uses it. Make sure you are applying the right expertise for the right tasks throughout your SharePoint development projects, and don't be afraid to hire external help when you need it.