Anticipation of stress and preparing oneself for anticipated stressful life events prevents anxiety and stress related disorders.
For example: like one prepares for mock tests well ahead in time before the main exam or even spot exams, in a similar way anticipate life stressors. For example, if one is 30yrs old - mid career, anticipate financial stress and plan for it. Anticipate BP or Diabetes in Mid Forties and start changing lifestyle now. Anticipate heart disease and operation in Mid- fifties, anticipate illhealth of other family members, anticipate financial stress about children's education, children leaving home in your sixties, anticipate mobility problems in late 60's and 70's.
Anticipate and prepare for health insurance etc.
Despite all this planning expect any sudden life events. Taking time for yourself - building your skills, exercising, enjoyable hobbies, playing a small role in society and leading a balanced simple life can alleviate lots of stress related illness and anxiety disorders and of course LESS MEDICAL BILLS.