If you're looking for a simple and secure tool for daily journaling, MotoDiary is a journaling tool with a minimal and smartphone-friendly interface, client-side encryption and cloud-based storage.
Click on the image above for a closer look.
Entries into MotoDiary are saved in real time to your local machine and synced when you are online. All encryption is done in-browser and client-side; only the encrypted file is uploaded to the MotoDiary servers. The interface is clean and spartan with only minimal elements like a back/forward button for browsing entries, a help button, a synchronisation indicator and a lock button to immediately secure your journal entries.
MotoDiary is free, works in any modern browser (including those on smartphones) and requires only a basic email registration.