When you dream of a double, it could mean that you are feeling insecure about yourself or that you are trying to make amends for something.
The interpretation of a double in dreams is often linked to the idea of reliving past glory and achieving success. This interpretation is often associated with the idea of a bonus and high reward. A second attempt at something might lead to an unexpected positive outcome, which can be interpreted as an exponential gain.
The dream is symbolic of the person’s self-awareness that they are not done yet and there is always room to improve upon their current situation where things can double.