We humans are always limited, it is something that about positive thinking so it is something beyond declaring positive confessions. We are limited in every part of our being so we must acknowledge that so that we are we'll be able to learn things the right way in our lives.
It's only God who is not limited there's nothing which God cannot do we must count on God on our abilities there are things that we're not given the rights to do even from God.
God created us and put things and many things so if men were able to do whatever they did then they wouldn't trust in God anymore. The world is not that continuum many people don't understand so they just conclude at their minds that when they die then all is gone.
That is a greater deception we cast our care on God and believe in him to trust our souls to him to depend solely on him that is the right way to manage our inner depression. God is the only one who is sufficient so the bible says that our sufficiency is of God. We are created the way we are so that we should return our entire being and trust in God always.