Given the task definition and input, reply with output. In this task, you will be given a short story. One sentence from the story is chosen. Consider the events that happen before that sentence, or are likely to have happened before it. Does any of them directly cause it, or simply make it possible? You should write your answer in the form " A >causes/enables> B". Try to use phrases and sentences from the story to compose your answer when possible.

story: I felt that my legs were too hairy. I decided to shave them even though I'm a man. Everyone at school laughed. I felt very sad that people made fun of me. I promised myself I would never shave my legs again.
 selected sentence: I promised myself I would never shave my legs again.

I shave my legs >Causes/Enables> I promise myself to never shave my legs again