Love this thread idea!
I have always kept a journal, used to have a little diary with a lock and key when I was about 8 or 9, then as a teenager I used to use msn spaces I think it was called as an online diary, then from age 19 to late 20s I had a journal on a parenting forum, then I started a bullet journal/diary hybrid in 2017, which I have done on and off (lasts around 4-6 months at a time every 2 years)
I started a new bullet journal/diary hybrid today, I like to have habit trackers and goals etc, but then I like to get my feelings out in it.
Like others have said, I also struggle to be truly open and honest in it from fear of it being read by others. I'm quite an emotional person and regret alot of the things I feel once the cloud has lifted.
I also believe in affirmations so worry about writing on a bad day because then it affirms it
so my journals become a bit like toxic positivity.
I love the future me email idea, I think I'm going to write myself a letter and hide it in the house somewhere to find when I declutter!
Anyway, this post is going a bit dear diary. Apologies