Past Grammatical Experiences

In my past experiences, I have not had much trouble with the functions of writing. My main issue has been with commas. I tend to use many more than are actually needed. I tend to use commas like alcoholics drink. They are convenient and usually get the job done. Unless, of course, I end up with a run on sentence that rambles on about 50 different subjects, which used to be a serious problem for me. Otherwise, spelling and grammar was never much of an issue. However, other than a gigantic words, I have few issues with the rest of the structures of writing.