Need help dealing with anxiety and depression

I'm 23 years old. I have anxiety, depression, PTSD, & I'm bipolar. My bipolar isn't nearly as bad as it was when I was in my teens. I just started taking Prozac and klonopin. The klonopin helps to an extent when I'm having a panic attack. I've only been taking the Prozac for about a week or a week and a half. I don't know how to deal with my anxiety. I have severe anxiety. Tons of things set it off. some times nothing sets it off. It just happens. Its an every day struggle. Having anxiety now actually. I usually get it most around people or talking around people. It's like my voice isn't my own voice, but I obviously know it is. I'm always scared I'm gonna die. Especially at night. I'm scared I'm gonna have a heart attack or a stroke constantly. I've been checked from head to toe basically and I know I'm fine but I just can't help it. This is not a way to live. Does anyone have any thing they do to help with their anxiety?