Blood cancer is so unique as there are no clear callouts as to how, what, and where; However, it has been suggested environment may be a component, so in that case, it may be hard to move around the environment. I would say as Dennis mentioned to live healthy or as healthy as can be. I would also say making sure you visit your doctor once a year for basic check-ups and blood work is a huge key because if something is brewing then the thought to catch it early is a good thing.