Positive thinking doesn't mean that you keep your head in the sand and ignore life's less pleasant situations. Positive thinking just means that you approach the unpleasantness in a more positive and productive way. You think the best is going to happen, not the worst.
Positive thinking often starts with self-talk. Self-talk is the endless stream of unspoken thoughts that run through your head every day. These automatic thoughts can be positive or negative. Some of your self-talk comes from logic and reason. Other self-talk may arise from misconceptions that you create because of lack of information.
If the thoughts that run through your head are mostly negative, your outlook on life is more likely pessimistic. If your thoughts are mostly positive, you're likely an optimist — someone who practices positive thinking.
Saya ada satu pepatah english: We don’t see things as they are, we see them as we are. So semua bergantung kepada cara kita berfikir dan apa yang berada dalam hati kita. Kalau buruk dihati dan cara berfikir, maka buruk jugaklah cara pandangan dan pemikiran kita kepada orang. Dan jika sebaliknya, maka baiklah hasilnya. As simple as that tapi kita merumitkan ia.