Your ability to cleanse yourself of negativity, guilt, shame, anger or frustration. What is it you would like to or are currently working to wash away in real life?

If you are showering in public, then you may be concerned how you will appear to others if you get something off your chest.  What, right now, is causing you to care too much about how others see you?
If the shower is filthy or cluttered, you may be dealing with too much distraction or negative emotions in real life to successfully cleanse your psyche.
If the shower doesn’t work or something is preventing you from using the shower, then you need to figure what in real life is blocking your ability to have a clean psyche or a clear conscience.