Feeling overwhelmed

So I've had a rough day, and I'm sitting here crying because I don't really don't see how I'm going to be able to be a good mother if I have two more babies. I already have one daughter and today was one of those days where I felt like a bad mom at the end of it. I don't know how I'm going to do this with three. My husband is gone a lot for work, so a lot of the time I'll be on my own.  Need prayers or good thoughts please.