When you identify yourself based on your limitations, real or perceived, you’ve already limited your ability to achieve more. Do not think, “I am too big” or “I am too injured” or “I am too old.”
Instead, “think, ‘I am Brahman. I am the Immortal Self in all. I am all pervading light, intelligence [and] pure consciousness.'” (Swami Sivananda).
What this means is that everything you need to achieve peace in your soul is inside of you already. God and all the tools you need are inside of you. Through yoga – the physical practice of asanas, as well as self-study and spiritual study – one can get closer to rediscovering one’s Brahman.