[caseysoftware]

It boils down to "If things aren't going well, change something."

I'd wager it comes down to taking control of your life. Even if life is "harder" by most measures after the change, knowing that you have the ability to make a change without the world ending is powerful. A new job, new year, new relationship, etc, etc is a chance to reset and do things "better" this time around.

Even if this particular change doesn't work out for the better, it changes your mindset.