The thing about this vision thing is that it's not about your vision. It's about their vision.
The great leaders over time have most certainly painted pictures of a brighter future. Those pictures have been ones in which their audiences could picture themselves.
As Jean Brown points out in Onboarding, Martin Luther King's "I have a dream" speech "contains, arguably, the most powerful message of any political speech in recent history." His was a dream that others could share and should share.
How well are you focusing others' attention on a meaningful and rewarding purpose?