Patterns of errors

In my writing, I tend to use a lot of fragments. I usually put more than three fragments in each paragraph. Fragments make my paper sound unprofessional and they seem to lack effort.  Also, I seem to forget to put commas where they are supposed to be. I am not good with dealing with commas because the person who edits my paper always has comments about comma splices. Third, another common error that I seem to make often is run-ons. I will always put two sentences together without a period or comma. I have figured out my errors that I frequently make in my papers so from now one I have to double check my papers for run-ons, fragments, and commas. I think I should also focus on learning how to fix my errors because then my paper will be better. I have been making these errors ever since high school and I believe they have become a habit because I cannot seem to be able to correct them. Nonetheless, I will be more careful with all the frequently use errors that I make in my paper.