Anxiety-Depression Vicious Cycle

Hi,

I can't remember the last time I was truly happy by myself. There's only one person that makes me happy. The problem is that it's draining to be one's whole source of happiness. I've been having these anxiety episode followed by depressive episodes. They can last for hours or months. When I'm anxious, I can't sleep, can't eat, and have many panic attacks. I'm also hypersensitive to smells, touch, noise and light. When I'm more depressed, I dissociate. It's like I'm a robot, doing things because I'm "forced to". I'm gaining weight and can't get restful sleep, so I sleep more. I'm looking for people who once felt like me. I've seen counselors, tried meds and other alternatives medicine, but nothing seems to really work. Anyways, if you're still there thank you for reading until the end.