I injured my back messing around in my garden doing backbends when I wasn't properly warmed up. I have a condition called bertolloti syndrome which creates a scoliosis of my spine and an imbalance in the muscles on my back. One side is overly contracting and one side is being constantly stretched.
For weeks after I had limited range of motion and was in constant pain. Pain makes you very short tempered, cross and tired. I was unable to practice yoga and even sitting in the car I had to have my hands by my side to support me as my back couldn't. For about 3 months I lost the sensation in my right foot and right shin.
I promised to myself as I lay on the floor in tears that I would be kinder to myself and more compassionate. That I would listen to my body and become a better teacher if only I could begin to heal.
My daily yoga practiced changed after that - well it had to firstly because of my back - but once I started to get more mobility I realised that I needed to take time everyday to just observe. Observe what it felt like to be me. Areas that felt tight, areas that were harder to breath into, how my energy was and how my mind felt.
I try to bring that into my classes. Be Kind. Be compassionate. Learn to listen to your body. That the only way your body can talk to you is through the sensations that you feel. However those sensations may be subtle so you need to start to be in tune with what it feels like to be you so you can adapt your practice to respect that. Whether your practice is a Vinyasa flowing practice, a more restorative healing practice, you are a new to yoga or been practicing for years. An advanced practice is learning to do less not more.