How can I rephrase this sentence to emphasize the underlying statement?
Solution 1:
I'm not sure if this is what you are asking but:
"It is always possible for someone to snatch defeat from the jaws of victory." meaning that it is always possible to make things worse by making the wrong decisions.
You could use is like this:
"It is always possible for someone to snatch defeat from the jaws of victory by...[doing this one thing or by doing these specific things]."
OR
"It is always possible for someone with a good life to make it much worse... by making mistakes like this..."