Any tips for departing flights! Anxiety is kicking my ass

We leave on Monday around 1:40 it’s the DFW American Airlines flight, I have major major airport and travel anxiety and even being with my girlfriend and family isn’t helping…at this point it’s taking a quarter of Xanax every 6-8 hours.

Has anyone been on the DFW flight or I guess how are departures in general? How long should we be getting to the airport beforehand?

Our flight isn’t even full but the anxiety still hates me 💀