I used to be a worry wart but I am doing better with that, however I still find myself battling negative thoughts at times. I am practising more meditation which definitely helps. Cancer taught me to stop worrying about things I cannot cont...rol which is alot. I learned after lots of research that negative thinking like worrying causes stress and stress lowers the immune system. When the immune system is out of whack it sets the stage for disease to take over. I changed my eating habits and I am working hard to change my mental habits as well.