Second baby worries

My husband & I are TTC baby number 2 & I’m excited but also a little sad about the thought of not giving our daughter 100% of my attention. She turned 1 in October & we don’t want huge gaps between our kids. She is the sweetest thing & I’m also a little worried that the second baby will be the complete opposite of her, is that horrible?! How do I get over these thoughts & tell me I’m not the only one!!