Proof that everything is possible

Do you find that even the statement begins a debate with the committee in your head? What is the basis of the argument? Is it that you believe that "it" cannot be done (whatever the "it" may be) or is it that you believe YOU cannot do it? Why is it so much easier to believe in the possibility and potential of others? What if you were to believe that you had unlimited possibility? How would it redirect your life?