Changing you think? You might ask, why? Why should I change the way I think, the way I function, the way I have always lived my life. Why I should do this. What good is it going to do for me? When person was told that they need to change their thinking, the point of it is, they need to open their eyes. People need to see what going on around them. Person need to know where they stand in their own lives.
Look around and see if you are happy where you stand at this point. If you deserve all the best thing that you wish for yourself. May be your not happy, because you don't have enough money, or you don't have your second half. You have to know where you stand, so can analyze yourself and see in what areas you need improvement.
Something in life goes wrong. Ask yourself a question. Why? Just simple why will let you know what you or somebody else did wrong. You going to see the chain reaction. You will see in what part of your life everything had started.
Learn to be the best at what you do. Do it for yourself not for somebody else.
Check out some material. You'll like it. It will help you.