I am in a body that is not me

I am in a body, but it is not me. This is not who I was or who I ever wanted to be. How can I communicate with it? Encourage it to align with me, help it see?
I want them to know my ambitions, what my heart and mind yearn for them to achieve, see I am in a constant battle with myself being stuck in a body that won't let me be me.

I am not sure how we find unity, resolve, a connection so we can live harmoniously, and so I am not always left deflated or in angst.
I am challenged because I feel inside a prison cell looking out at all the potential I want to obtain, but yet I feel my true self is inside this restricted body, but it remains locked.

I have felt I have pushed the limits, demonstrating my desire to be more than this. I am fiercely independent in nature, yet my body seems to stick to this default.
Somehow, every time I push, I only encounter walls and resistance that breed frustration and fear. Is this it? Has my life officially come to a halt?

I am truly unsure. I have researched all I can within my capacity, pushed myself, attempted ridiculous methods to help my body choose to live with increased ability and proceed.
Somehow, in some way, I just wanted my body and mind to be tethered, so however we do that, please help me and show me how much better in this life I can achieve.