The song "Can't Go Another Day" by Rob Mayes is about the struggle of realizing that a relationship may not be working out. The lyrics describe the feeling of being torn between wanting to hold on to the relationship and knowing that it may be best to let go for the other person's sake. The singer acknowledges that their heart is telling them that the other person may be better off without them, even though they don't want to let go. The song captures the emotional turmoil and inner conflict of realizing that it may be time to move on from a relationship. Overall, it's a heartfelt expression of the difficulty of letting go when you know it's the right thing to do.