Anxiety..

I get really bad anxiety.. pretty much everyday. Sometimes to the point where I can't even leave the house. I just worry way too much and overthink everything.. I'm always stressed. I always have to plan things and know what to expect before going anywhere or doing something, even as simple as making a phone call. What's wrong with me?? Does anyone else get this way too? I can't seem to shake it and I'm really tired of dealing with this! Advice? What helps you?