The simplest way to begin a journal entry is to describe your surroundings and what you are perceiving through all of your senses. It brings you into the present moment, which is a good place to start any writing from. Stop, take a few breaths, check in with yourself. Record the sights, sounds, textures, scents and tastes you're taking in at this moment - without any embellishment. If that's all you write today - it may just be enough.