This is the hardest thing to ask for because what's wrong with wanting that one thing?
Wouldn't it make our life richer, and more complete?
Wouldn't that one thing end all of my problems, and place my feet on more solid ground?
Doesn't God want me to be happy?
Like a true parent, above all, God wants only what is best for you, and not all experiences are good for you.
If you trust God enough to allow Him to give you the best out of life, it might also mean you miss out on what you want.
And at some point you'll realize that was the best thing He could have done for you.