Abhyasa

Turtles enjoy sex.  You can enjoy yoga practice.

• Doing the poses "right" -- like a model, like your teacher -- often isn't actually safe.  Pushing your body into things it's not ready for can lead to injuries over the short- or long-term.  The safe way to do poses is slowly, carefully, mindfully.
• If you go into a pose, and there is resistance there, stay with that resistance.  Don't push past it.  See if it dissipates.  If it doesn't, okay.  If it does, then find the next point of resistance.
• Pace and quantity are nothing.  Control.  Quality.  It's okay to take it slow.