I feel all six sources in the video have great impact in people’s lives. However, personal motivation and environment change has the greatest influence on me. For exampel, several years ago, I made my decision to study as a pracrical nurse. I was determind although many people told me that nursing school was very difficult. When my chance came, I started my study with no hesitaiton. The study was indeed very challenging. We often had multiple critical tests falling in one day or in the same week. I remember I often stayed up late and during one night I only slept for 2 hours since there were several tests in the next day. However, I survived with my strong peronal motivation and a great support from my family. As a result , I think peronal motivation and environment change have great impact in my life.