"I began wearing a positivity bracelet two years ago when I was seeking a way to change my own thinking. At the beginning of this process, it was overwhelming to look at the number of negative thoughts that were leading my life. It was at this time that I discovered the idea of a positivity bracelet. The positivity bracelet links your negative thinking to a conscious, physical act of moving the bracelet from one wrist to the other and back again throughout the day as you mark your negative thoughts and replace them with something open and neutral. ... The process is kind of like cleaning out an old closet that you can’t even see into. As you discard or at least organize the clutter of habitual thinking, you actually find a refreshing space of attention available to contain other more positive thinking. You have room to become your own friend and slowly, day by day, this deep internal shift impacts everything you touch. The practice allows you to create and listen for the thoughts that will move you closer to the life you actually want."
I found this good advice at Wendy's Positivity Quest.