The key to balance is knowing when you have lost it.
Consider looking at you yoga practice. What do you see? Is what you're doing relevant to where you are today? Perhaps your practice would benefit from a more restorative, or more active focus. Witnessing (without judgement) is the first step toward updating for todays needs.
Allow the wisdom of your body to guide you toward a yoga practice for you and for now.
There's always more to learn about yoga and in turn, learn about yourself.