I feel pretty certain it would. The sun is not strong in Libra. Are you Cancer planets conjunct? That would make them pretty strong, I think.
Good point, Francesca, not to mention that the Moon is in the sign of its rulership and Jupiter is in the sign of its exaltation in Cancer. And with your stellium in the first house under a Cancer Ascendant, I can only imagine that this sign is an important part of your identity