The way you see yourself and the way you describe yourself to others are very important for your personality and attitude.
The look in your eyes when something happens is the reflex of your thoughts. You can't manage your eye perfectly unless you manage your thoughts and your mind.
The self-talk you find yourself doing all time when you are angry or excited or even when you plan to do something is very important, it's not non-sense, actually it's your attitude builder. The quality of your thoughts are the right way towards your improvement.
Think positively and test yourself for a while; your life will be extremely different. Sometimes, you can't control it, you just find yourself reacting this way and your mood changes accordingly. No, it's not that way; it may be a habit you used on doing that's why you react without you knowing. Try the opposite and take everything with a smile. Think of all the good aspects first and draw an image, then the bad ones will find themselves shrinking automatically!
Try it for only a few days and look at yourself and your character. You will find a better person you want to always lead for the best.
Perhaps the most powerful influence on your attitude and personality is what you
say to yourself, and believe. It is not what happens to you, but how you respond
internally to what happens to you, that determines your thoughts and felling and,
ultimately, your actions. By controlling your inner dialogue, or “self-talk,” you can
begin to assert control over every other dimension of your life.
Brian Tracy, Principles Of Success