According to scientists who actually study the field, stress is a leading contributor to mortality.I mean, really, what does my current issue mean? I will have to make a bunch of phone calls to find a plumber or heating tech. I'll have to pay out a notable, but not really threatening, chunk of money. I will probably have to heat water for washing dishes and baths on the stove for a couple of days. Big whoop!
Basically, I had very fast readjustment of scale, such that my difficulty no longer looks of feels difficult.
But the thing is, our bodies can't tell the difference between the stress of being hunted as prey and having a bad day at work because of a computer malfunction. And every interaction we have with another being- even saying "Hi" to a friend or loved one- raises your stress level, at least momentarily.
So while your problems may not be big deals in the big picture, they are still your problems. You can't make something non-stressful, but you CAN, with time and effort, minimize the height of the spikes and their duration by keeping perspective, as you say.
Still, since we are not (as some say) "thinking animals", but rather, animals who have a greater capacity for rationality than others, we cannot maintain perspective at all times. I live in the USA, and have a life that puts me in the upper 5% here. If I were able to keep perspective 100% of the time that I don't live in Bangladesh during the monsoon season or live in a war zone, etc., I'd cheerfully go about my day all day every day.