Stop living in fear

for some strange reason believe I’m scared like a small tiny mouse. Here I’m a grown man and I’m thinking tremble like a puppy about stupid stuff. Why can’t I walk and talk like I live to the fullest? My arms when I walk are stiff. I “feel” the stiffness of fear in how I carry myself around others. Fear is disabling me from feeling loose and comfortable. I feel as if I can’t simply be myself. yuck.