That sinking feeling seems familiar

Anxiety has been closer to me than my shadow. A deep fear of anything and everything that creeps under your thoughts and burrows into your existence. It’s hard to describe the overwhelming anxiety to someone who doesn't have it. They say things like “just relax and everything will be fine” or “why are you freaking out, this is fun” or “you’re being irrational”.  It feels like there's a wall holding you back and after awhile you get used to it and find ways to work around it. But sometimes it just feels like you're drowning. Sinking. Falling.