There is no recipe, how to grow old with someone and still hold hands in a park at the age of 80. Each couple has to find their own way through life. However, I would like to point out some general guidelines that I personally find useful:
Remember that each individual has his/her destiny, mission in life and own ways of fulfilling it. If one does not compare himself/herself with others and does not compare the life partner with others, they can both live happily ever after, which means they manage to resolve their conflicts in a rather nice manner.
Take care,
Helena Smole