Okay firstly at 15 you are and will continue to still grow and develop, so your height isn’t a finished process as yet and you will continue to grow throughout the years and develop. With changes like you want to create, you first have to believe that these are possible. You already are showing signs of doubt in your message in that you believe 6 foot is too tall. Secondly you want to get clear on why you want to be tall. What difference will it make to your life and living? Because when you start to look at the reasons why you can start to create changes on an energetic level – and you may find that you don’t actually need to be tall to have the life you want to create. Then you want to affirm and work with your body and saying affirmations is a great way, but you also want to get rid of negative thinking and process out thoughts like “I can’t” or “I am short” etc. Writing affirmation is an easy way to do this, but be warned, you may find the first few attempts you write pages and pages worth of stuff –but keep going.