Positive thinking is the thought which doesn’t generate negative emotions like anger, worry, fear, hate, or jealousy. It is also the thought which makes you feel good and happy about yourself, others, and even the world. It is the thought which makes you feel peaceful and balanced. To change your emotions, thought patterns, and feelings, you need to be mindful of the feelings and thoughts which is called mindfulness.
Being mindful requires you to monitor and also observe your self-talk, thoughts, emotions, and thought patterns. Then, you need to apply the intent and can change them from being negative to positive.
This will also change them from absorbing in the self-talk and thoughts to being in the senses, heart, and in a moment. Positive thinking need an open mind and open beliefs. This requires one to dismiss the rigid and narrow beliefs by changing them to open and positive.