anyone with anxiety?

I've had these problems all my life and my mom has made me suffer in silence. She says that you just have to choose to be happy, but lately it's been so hard to move. I don't know exactly what that problem is but I worry constantly about things. My husband made me go to a movie and the harder I tried to relax the more tense I got sometimes it feels like I can't breath I have to try to calm myself down with deep breathes. It's just an overwhelming feeling of restlessness that I can't control has anyone experienced this?  Is it anxiety? Is it something else?