i'll be worrying about things i don't need to worry about and have really bad existential crises, jaw clenching, fast heart rate, sensitive to lights and sound, irritable, shaky, poor sleep, etc. and then the fact that i feel more nervous than usual makes me anxious. is this normal? i've had anxiety half of my life and it still scares me everytime i have these flare ups. i try to tell myself anxiety can have flare ups just like depression but i dont know