I would say that keeping your immune system well. Eating healthy, greens, no meat, no bacon. Fish and chicken. No hard liquor. Glass of occasional wine permitted. Non-alcoholic beer is best. Eating healthy will keep the cancer circuit breaker from tripping. Also, exercise is good, meditation for relaxation. Tai Chi is also good. So hopefully Waldenstromms will be kept at bay by taking care oneself. The basis of relaxation technique is to remain calm and keeping social. If one is anxious and has pessimistic thoughts, the brain gives a signal to produce the hormones cortisol and adrenaline. Cortisol especially has a deleterious affect on every cell in the body. One method of instant relaxation is slowly inhaling by nose and slowly exhaling through mouth.Remember, the acronym “F-E-A-R” is False Evidence Appearing Real. Fear can become a self=fulfilling prophecy if one overly worries and is anxious which produces cortisol.