I knew having kids almost four years apart would be a challenge. Just like if they were 18 months a part. Or 10 years. Or 2.5 years. The challenge comes in the daily grind, because, well, kids are challenging. And my girls are exactly the same in the most opposite of ways. They both have this "Hey World! I'm here!" attitude that manifests itself completely different. It's wonderfully beautiful and inexplicably exhausting all at the same time.