What is the right view/attitude towards dukkha?

In the conventional sense, views on dukkha (stress/hardships/difficulties/suffering) are rather mixed. We have the saying, [“No pain, no gain”](https://www.dictionary.com/browse/no-pain-no-gain) that implies that suffering is needed to make progress. There is also the saying, [“Whatever doesn’t kill you, makes you stronger”](https://www.dictionary.com/e/slang/what-doesnt-kill-you-makes-you-stronger/) , again implying how difficult experiences make a person more resilient. Yet, it is known today [many diseases are stress-related](https://www.webmd.com/balance/stress-management/features/10-fixable-stress-related-health-problems) . I have friends/acquaintances who suffered from diseases which I strongly suspect is a result of their stressful lifestyles. What is strange from my observations is that most of the time, they are either not aware or simply feel that everything is normal. I suspect that over the years and decades even though the stress had reached [chronic level](https://www.yalemedicine.org/conditions/stress-disorder) , their mind had grown used to it even though their bodies did not. In fact, one of them appeared nonchalant when I implied that there might be a link between her illness and stress. Sometimes, I wish doctors are just as good at curing the mind as they are with the body. 1. How should lay Buddhists view and make use of dukkha such that it is helpful not only spiritually but also allow them to make meaningful progress in the world? 2. Is there a way to strike a balance with stress in our personal and professional lives? 3. What advice would you give to non-Buddhist friends who are suffering from chronic stress?