Older self
A future version of you appearing in the dream — a self further along the road, carrying what the current self has not yet lived.
An older self in a dream is the dream's image of a future version of you, a self further along the road, carrying what the current self has not yet lived. The older self is hypothetical and is also a useful voice. The dream brings the older self when something in your life — a difficult decision, a question of long-term direction, a hard piece of patience — is being asked to consult someone with more road behind them. An older self met as a guide is the dream affirming the consultation. An older self met as a warning, with the future shown as a consequence of the current choices, is the dream noting that the version of you ahead is currently not the one you would want to become.