People follow someone further when they know that person sees them as more than resources.

People can tell whether they are being valued as a person or as capacity, and the difference determines how much they will extend themselves. Being treated as a resource produces exactly the amount of work required and nothing beyond it. It is a rational response to accurate information.

Learn something about the people you work with that has no operational use. Ask about the thing they care about outside the job. It is not a technique, and it will still change what people bring.