@Augustlan, take a writing class, perhaps one that meets weekly at your local community college or a retirement center: a general class or one focused on some area of specialty, such as humor or memoir or historical fiction. It doesn’t matter. The class will require you to do some writing, but probably not a burdensome amount. You know, it is just amazing what can come out of you in five minutes in response to an in-class writing prompt. It’s like Dumbo—wow, I didn’t know I could do that! You can teach yourself discipline and learn the craft through practice and study, but it may take actual outside help to get started. A class, a writers’ club, or a conference can do the trick.
Writing is one of the few respected fields of endeavor that you can get into without a credential and without a significant cash outlay, but it does take time, practice, and hard work—difficult to commit to without something that gives your confidence a boost.