someone says how you think, determines what you become is this true?

Yes, I do agree with what you said. It's like a domino effect, or one leads to the other thing. For example, one's cultural, educational and family bearings have helped shape the person's value systems. These values become the bases for that person's view about life and how he tackles his life experiences. In the end, he becomes the person he had decided to become or had set out to become (on the basis of maintaining such values). What he had indeed learned and applied in his life made him the person that he became later on.

Your Thought Life will make you grow for better or worst. If you think people hate you then you become a loner. If you think possitive thoughts - and act it out - being forgiving and extrovert. All started from your thought. Plan your day and make possitive actions about them - you will find better results.