SolStock / Getty Images If you get a big holiday check, you should devote at least some of it to paying off high-interest debt. Key Takeaways If you receive a holiday bonus or gift money, you may want to put most of it toward long-term financial goals and use a bit to treat yourself, too. Think about how to invest these funds for long-term growth. Even if you can't fully accomplish a financial goal with your year-end check, building some momentum helps. The holiday movie National Lampoon's Christ ...