The main thing is to write a little something everyday even if it is just what you have done each day - like a diary and gradually embellish on it...write what you know about, practice writing about things you read or hear about and do your research especially if you intend to write articles.
As for your touching personal story - just write it down, read it over and over, add to it, edit it, and eventually you will have the story written the way you want it. If you are going to publish it on hubpages make sure you've grammar and spell checked it.
Hope this helps. I am sure more experienced hubbers will be along shortly to add their experience as well, so good luck.