Changes and unpredictability

#How to stay strong in the face of unpredictability and uncertainty. My life has been quite a rollercoater of unpredictable and uncertain event, but I seem to always have adapted to the new environments. But what is it really that helps me in doing that? The first part is the optimism. I am the glass half-full person, which have worked for me throughout life. I don't know when and how I have developed the tendency to see always good no matter in what is happening, but this has made my life so much sipmpler