God Ain't Make No Junk

I took inspiration from an audio motivation program I heard today morning while driving. It's from Brian Tracy on achieving financial goal.
He said, 'God Ain't Make No Junk' which carry a significant of weight into my mind while I ponder about it. I think of God really make the things in harmony. All the things or life he had created with reasons and purpose.
He said, not all persons are perfect, but they are good at certain things. For example, take a look at Stephen Hawking, the guy is on the wheel chair and have disability in his speech, yet the guy is a genius in physics and he talks about black holes.
Another example of this guy named Nick Vujicic, he got no limbs, many would think he is a 'junk' coz all he has is a 'drumstick' it's a small protrusion that grow out from below his body. The guy is super positive in a certain way, and he is a master motivator as he is giving talks in churches and schools.
The world that God has created are working in harmony. There's no such thing as useless or junks, it is just having it's specific functions or roles of its existence. I just can't emphasize enough of how many of others who have similar disability and yet achieve greater things than us who are without any physical disability.
So, think about it, we should be positive about ourselves.