Difficulty in writing

Why is it so hard to write? I really need to write, I know that, deep down in my bones! It is driving me nuts, I feel like I just can't find the time to sit, uninterupted and write. I am afraid that I'll get angry with interuptions, and I don't even start to write because of that fear. So I have been allowing fear to control me. Fear of frustration. I am with children from the time I wake till sometimes after I try to go to sleep. Whenever they interupt me, I get upset. As much as I try to teach them about mom's quiet time, they seem to always have something come up, some reason to disrupt me. So I lose my train of thought, and either have to get up and take care of a boy who's fallen in the pond, save a creature one of the cats brought in, or clean up chocolate milk out of the carpet! Lets not forget diapers and potty training! So I know what I need to do to find myself, but I don't know how to find the time. Well, the uninterrupted time. Sooooo I forgive myself for accepting and allowing myself to get angry with the children when they interrupt my train of thought. I forgive myself for accepting and allowing myself to be controlled by fear of getting angry. i must try to write no matter what, and not let fear of frustration dictate what I do.