Giving both my twins the attention they need!?

I have four month twin girls, one of them, Aria, cries A LOT, I can probably go no longer then  10 minutes with out having to pick her up, meanwhile her sister, Zaria, who is very reserved and laid back hardly cries unless it's feeding time or if Aria is just crying too much. When Aria cries she screams at the top of lungs making it hard for you to focus on anything else other than her including her sister who might be crying as well. I'm a first time mommy and the youngest of all my siblings, so all of this is new to me. Just wondering if any mommy of twins has any advice on how I can provide both of my beautiful girls with the same amount of affection, attention and security.