Watch your thoughts, for they become words.
Watch your words, for they become actions.
Watch your actions, for they become habits.
Watch your habits, for they become character.
Watch your character, for it becomes your destiny.
Your destiny is your faith: If having faith, even just the size of a mustard seed, can move mountains… imagine what the possibilities can be if you embody your heart and soul to that faith…..
Mathew 17:20
And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you.
Biebs' World 
So true, man. People seem to shrug off all the little things like they don’t matter. And yes, each alone may not make much difference, but it’s all the little things added up that make you who you are.
I was listening to Glenn Beck one day, and he said he used to sign his name, and at the end, he struck a line through it. And someone told him that was a sign of a self-defeating personality. They said if you can change your signature you can change your life. It wasn’t so much about the signature causing his self-defeating attitude, but a sigature is something most people do every day. If everyday you’re actively making an effort to sign your name differently, you start to actively make an effort to change your attitude as well.
If a person doesn’t like the person they are, they need to stop and think of how they react to the small stuff. Traffic jams, loud neighbors, messed up orders. How you handle each decision you face, is what ultimately makes up who you are as a person.
I agree with Matt, I couldn’t have said it better.