It's crazy how little it takes to set me off. Just because things won't be the way I planned for it to be it's suddenly me against the world?

Calm down. You always blow things out of proportion. It's not that big of a deal. Things can always change too and don't be irritated because she hasn't texted you back. You know she's busy and she usually takes forever to respond to texts but yet answers quite quickly to yours. Don't let this dictate your day and ruin everything. Rationalize, accept it, and move on. Everything will be ok. You're seriously blowing things out of proportion. It's not that big of a deal. You're going to have a good day nonetheless. Be grateful for the amazing day yesterday.