How can i be a stronger person?

I start off with this because I today was sent the link to a heartbreaking story about a little boy named Elliot. http://www.ignitermedia.com/products/iv/singles/570/99-Balloons Be prepared with the Kleenex. This is truly a touching story. I had a hard day with the girls, and was very frustrated my the time they went to bed. I read this story after that, and I thought things could be so much worse. I had every intention of starting this blog with stories about how the girls acted today, but after seeing and reading this story, I know I should feel blessed that my children are here healthy and happy to have these days with. So my question is how can I be that strong person and a better mom? I pray each night to have the strength to make it through the day and not loose it, and for the most part that happens, but some days i just feel like I wasn't meant to be a mom. I love my kids more than anything, and I would do anything for them. I want them to be happy and well adjusted children, and I sometimes wonder am I ruining this for them. I do not have the patience for them some days, and i truly feel horrible for that. What is wrong with me? I sat here reading about this child and crying 99 days is a miracle for him, but not long enough for his family. I don't know what I would do if something happen to one of my children. Please pray for us, pray for Hailee's attitude, and my patience.
The girls and I planted some little pots of flowers today, they enjoyed it as did I. I enjoy doing these things with them and I know they enjoy the time with me. I am trying to make an effort to be more fun for them. Hailee will register for Girl Scouts tomorrow, and cheerleading on Wed, so we will again be busy. She loves cheerleading so she is glad it is starting up again. And she is excited to do Girl Scouts, i am excited about the cookies. LOL I am hoping that I can also get involved with Girl Scouts and maybe that can be our time, although i know that will mean getting a babysitter for some of the times when Michael is gone, we will see how it goes. She needs that special thing with me. And I want that as well. Now I will have to find something special for Lainey and I, as she will need it too.
I read these other Blogs and am so impressed by their writing style, I wish I had that style. I am not an elegant writer, but it is therapeutic. I like to do it. I would also like to hear from you guys post a comment, it lets me know someone is reading my long winded writing. LOL
I hope you are all well, till next time. Remember to hug and kiss your family and tell them you love them, today is gone and tomorrow may never come.