Another approach to journal writing is basically the opposite: rather than treating it like a task to fill with very rigid requirements - find a notebook and pen that you'll enjoy spending time with. An easy start is a Midori Ruled A5 (very simple, lay flat notebook) and a Uniball Zento Signature (the most hyped pen in the world right now) and treat them basically like little friends you spend time with. Writing only two sentences is denying yourself quality time writing and reflecting at a leisurely pace if you really come to enjoy it.

I'd also think you're more likely to read back if writing time is a fond memory.