I Mixed Up the Date and Missed Arafah – Feeling Heartbroken

Assalamu alaikum. I really thought the Day of Arafah was today, especially since Eid is tomorrow here. I spent so much time getting my heart ready, even wrote down all the duas I wanted to pour out to Allah with my whole soul… only to realize Arafah was actually yesterday. I did pray yesterday, but it wasn’t that deep, focused worship I had planned. I didn’t sit and beg Allah for everything in my heart because I truly believed I still had another day. Now I feel like I let this blessed day just slip through my fingers, and I can't stop crying. Has anyone else ever made this mistake?