S.C.
K.,
What a great idea you have. I'm like you, I think journals are best kept private even though I know that now days some people like to blog and share their stories. You could keep an MS file and add your updates as you make them and back up to a flash drive or a disk. The only problem with technology is how quickly it changes. The way you are storing your information now will likely not be the same 10 to 15 years from now so you need to be alert to constantly updating your information to the most current technology. If you don't you may end up with a wonderful life journal with no way to access it or for your son to access years later. I have kept book journals all my life. I started as a child and have kept them off and on for about 40 years
and love to go back and read them. I also started one for my children but unfortunately it took a different track. Good luck to you I hope you keep it up.
S.