A training ground that is sure to exhaust us. !LOLZ.

Not necessarily. The exhaustion occurs when one resists the exercise as such and it is supposed to be "easy". But if it's easy, we don't feel it's really worth doing, do we? Say: If I have the expectation that my daily life should flow without me being the water, and I am the lump, the struggle against myself exhausts me. Less so is the other person. It refreshes if you welcome it as an exciting challenge, then it can give you energy on top ;)

I think this mindset can be applied to cope with most of the challenging situations. It would groom us.

Yes, it is. This way of thinking helps me very often when I start to realise that I am fighting a lot unnecessarily in a situation.

However, it is never easy. Especially with regard to spousal relationship, it is quite difficult.

I experienced that it's difficult when you have a man or woman who has no willingness to mature and sees in the other person not a challenger but an adversary or troublemaker. Alternatively, a disinterested bore. It may well be that a marriage has brought two people together who do not both have a genuine interest in seeing in the other person the development agent.

It feels like you have solved the problem and you won't be encountering it again, yet at a later time, it stands in our way the same way.

Indeed, indeed! :) Thank you for rephrasing it, it's exactly what I meant. Life never fails the humor to repeat lessons. LOL

When I am seriously ill

Hmm? So you can only get away from your daily chores when you are seriously ill, they seem to be compulsory, not voluntary. Something you do routinely can stand a break in the routine, it does not in any way discredit the completion of your tasks, rather the opposite.
Leaving tasks undone/imperfect can be inspiring and liberating, and those around you have the chance to realise that you don't function like a robot, but like a human being. Exceptions that confirm the rule rather than violate it is what I mean.
But if you get the others too used to the fact that they are always guaranteed to find such things that are part of your tasks, they themselves will have little reason to vary their own tasks or to let them overlap theirs with yours. Such a duty programme can cause one to lose love for one's work because too little freestyle is missing from this working life as a certain spice.

Therefore, without making any insinuation, I would assume that you may be stretching out some of your favourite tasks and filling them with spontaneous ideas, while doing others more fleetingly and reluctantly. Those to which you devote more love or care are then the "free times, i.e. the freestyle" I was talking about. Otherwise, if you only have free time when you are sick, I would rather lovingly mock you and call you a (lousy) "martyr". LOL ;)

Marriage and life without extended family and village is a social experiment that has only been going on for a very short time, if you take a look at the long history of mankind. Women have always had their own domains, just like men, and they were strong and skilled in what they created and did together on a daily basis. Just like men. That now man and woman form small units is a new phenomenon and it is no wonder that there is a lot of failure here.

Thank you, I am fine. Very much, actually.
Greetings to you and I am happy to have a chat with you. Bye bye!