Your vision is the articulation of a future condition that does not presently exist. But if your vision has to do with self-aggrandizement, you’ve missed the point entirely. You will never be the biggest this, or the leading that, or the greatest whatever, unless you serve your customer well and change their life for the better. But when you describe how things will have changed in the future for your customer because of your contribution, then you have captured your vision, and the adventurous journey towards it can begin.