My guest's story this week is the ultimate example of how, as humans, our thirst for life and survival forms a refusal to accept defeat.

After being diagnosed at the age of 11 with two rare conditions, Victoria Arlen lost her ability to speak, eat, walk and move, and quickly slipped into a vegetative state. She spent the next two years hooked to a lifeline in a hospital where she was written off as "a lost cause." Despite medical professionals agreeing that there was little to no hope of recovery or survival, Victoria regained cognitive function after two years. However, she couldn't see, move, or talk, but could hear the conversations around her—with no way of letting her family know she was awake.

Not only did she wake up after four years, but she has gone to become a Paralympic gold and silver medallist, learned how to walk after 10 years in a wheelchair and was a contestant on Dancing With The Stars. Victoria's story and experiences teach us how the importance of controlling your mindset, refusing to give up and expressing daily gratitude made her - and can make you - limitless.