Interesting question, K.. I agree with Amy, Lee and Michelle. As for me, personally, my mantra is "I have nothing to complain about." My mom was the single mom of 3 kids (I am the youngest), and we had very little. But my mom worked hard and sacrificed. When she retired from her housekeeping job with a large hospital, her highest salary was the same amount I started out with with my first full-time job. Yet she instilled a lot in us and we've all gone to college.
Over the years, the lot of us have had set backs and tribulation ranging from divorce, and imprisonment, bankruptcy from divorce, attempted suicide, cancer and other long term health conditions, a child with a debilitating disability, I've raised 2 kids with very little support from my ex, he just lost his job, his family has 14 year old who is under constant suicide watch, we live a hand-to-mouth existence but still, I look around at stuff happening to friends and others in the community, and I think, man! I'm blessed. We're blessed! Life is tough but if I measure it by our overall wellbeing, by all the forms in which abundance manifests itself in our lives, and by the fact that overall, my family is fairly happy and doing relatively okay, then I thank God that I have nothing to complain about.
The fact is that, as bad as I think all my problems are, there are others who don't know where they're sleeping tonight. There are women being stalked by crazy men - or women - there are families sleeping out in the cold and eating from some dumpster. I have nothing to complain about.
There's a school of thought that says the struggles you encounter are manifestations of life issues you come into the physical plane with. And then there's the whole karma and dharma thing. Some people might say that's all foolishness but as a Christian person, having done all the things that the Bible and the Church says to do and still can't catch a break, I think we have to wonder if some of that might not be true. Accept it, look past it, keep your chin up.