Getting started is one of the toughest things to do..you don’t know who your audience is. You feel weird typing words on a blank text field you are unsure anyone will read.
First, write for yourself. What can you blog today that will have value to you a year from now? Posting your vacation pictures and video clips is a great first start. you want to add as much detail as possible to ensure the post has cues to prompt your memories. Maybe add a voice recording to your text descriptions and photos, to add more you(as you are now) into the post.