I've noticed this if I spend too much time without meaningful face to face conversations. Translating my thoughts into coherent sentences becomes a little more challenging.
I wouldn't. There are enough free options (e.g. onenote, email, physical journal, etc.) that work just fine for me. I personally don't see the value in paying for a service that uploads and syncs my journals, even if it has a really nice interface.
Were you using Day One? It stores unencrypted entries in iCloud/Dropbox and has the weakest password protection system I've seen. Your password isn't even synced across different devices, you need to set it each time for each device! I haven't yet stopped using it but I'm looking to make the transition to something else.
OneNote allows you to password protect and encrypt an entire section, so you could make a journal section an store all of your entries in there. It works quite well from my experience. Evernote also offers encryption but you can only encrypt a selection of text and it can be inconvenient to have to encrypt each entry separately. Both options have mobile/desktop/web apps.
Another option is a private Wordpress journal.
A lot of people here recommend using a physical journal and a pen (I'm planning on going this route eventually). You could also use good ol' text files synced with dropbox (or something else) and encrypt them yourself.
Probably the most important book I've read. I'm always trying to put the concepts he discussed into practice (often unsuccessfully). Thinking about what you're thinking is hard!
I've noticed this if I spend too much time without meaningful face to face conversations. Translating my thoughts into coherent sentences becomes a little more challenging.