hard to get my words out...

hard to get my words out... I’m trying to accept my stutter but it’s getting hard when I can’t get certain words out like it’s so inconvenient at times. It’s like I can’t get a word out so I change it for a different word. It feels like I’m not breathing right and I can’t control my breathing it’s frustrating. Does anyone know any techniques I can do to release the tension and breathe better to have better flowing speech