This reminds me of myself at the moment. So much of my PD (professional development) comes from Twitter and the PLN (personal learning network) I've created.
This is the truthful cycle of classroom management and the idea of 'Rules'. I can almost guarantee that every teacher has experienced every part of this cycle!! I know I have!
This is definitely the case these days. Who are the real stakeholders of our schools? How much does what parents say/do impact our teaching?
Staffroom HQ 
Love the last one, I can now admit I was one of those parents!