Life begins at the end of your comfort zone. I think your mom has a point. The more you put yourself out there, the easier it becomes. When things get easier, you begin to try new things, and the old fears are no longer fears. Eventually you will be less afraid of everyday activity, and hopefully, you can go on with more peace in your life. Also, all the fear and anxiety you're having - its ok to have it - stuttering is scary. Mindfulness and the like can work, but only when you are less stricken to fear. Accept the fear, but dont let it control you. The more you accept it, the easier it is to let it pass.