Some days I think I am the most unbalanced person in the world. Take tree pose (vriksasana) for instance. Most days I can stand up straight with all the concentration in the world and other days, I'm happy if I don't fall over more than once during the duration of the pose. This can be really embarrassing if I am teaching a class.
But I try to remember that it's o.k. to fall. We learn the most when we make mistakes and believe me, I've made a lot in my life. What's important is that we pick ourselves back up and try again.
Every tree sways in the wind. It's what makes our roots even stronger in the end.