If you're about to change something, remember that it's your change.
You've thought about what you want to do--most likely for a long time. You've weighed the risks and benefits. You've visualized what things would look like if your new idea/project/improvement is implemented. You've even thought about at least some of the details. But most of all. . .
You are convinced of it's worth and you feel good about it.
Hey, I'm pumped up! Why isn't everybody else feeling good?
When you introduce your new thing, you are at the end of your process. Everyone else is at the beginning. They can't get to where you are without you laying out your full process--including your own apprehensions.
What have you needed in the past to commit to someone else's new idea? Think about it and see if these match pretty closely
To maximize your chances of gaining commitment, be real and. . .
1. Tell people what you want to accomplish.
2. Tell them what led you to believe it's important to them and to you.
3. Tell them your own struggles along the way.
4. Tell them how long you've been thinking about it.
5. Tell them you are committed to it.
6. Tell them your plan for helping them be able to do "it."
Then give people a reasonable amount of time to think about it, question it, be uncomfortable with the newness of it, begin to accept it, and then be involved with how it will be implemented.
How long will it take?
Depending upon the size of the change, the time line for building critical mass of acceptance and action will vary. Your relational behavior--physical presence, clarity, direction, ability to listen, and encouragement--will help determine your success.
Remember that it's your idea. Do what it takes to help make it their idea. Well, that sounds manipulative. I hate manipulative. Let's look at it this way: It's your idea. But ownership by others comes through being allowed to use one's own ideas for the implementation. After all, the people involved know best how their operations work. So let other people develop and mold the "how to." Then provide a reasonable amount of time along with your support.
The outcome: you stand a great chance of other people making your idea even better in the process. Everybody gets a chance at creating something new. Satisfaction and success follow.
Big win for all concerned.