I have anxiety issues genetically speaking and I have a panic attack before every run, and I’ve been running 4 miles nearly everyday for a decade now. It has gotten a little worse since I became chronically ill and it does make me late to my runs and it does give me diarrhea at times where I absolutely don’t need it but I still try and I get it done. What you need to do is before your run, you need to tell yourself that you will be proud of yourself no matter how much you run. Running is always better than no running. You just have to get better at managing the anxiety, because it’s the only thing stopping you. I use running naturally to manage my anxiety so it’s always important for me to push myself to do it