Sure, there will be times where you have drama, issues, and politics at work but overall, are you doing something where you feel satisfied at the end of the day? If not, maybe you are in the wrong field, working for the wrong employer, or even working for the wrong company.
Or perhaps, your life is out of balance. We need to make sure to focus each day, or at the very least, each week, on things outside of work to feel productive and well balanced. These areas include: family, friends, fun, household duties, health, spirituality, rest, and furthering education, whether taking a moment to read an industry related article or pursuing more formalized education. When a wheel is out of balance, it doesn't work. The same is true when your life is out of sorts: it makes you less effective and satisfied with your job. Maybe you love what you do but are burned out. Take a fall day, now that the kids are back in school. Take a breath. Get to the doctor for a check-up. Feel good about who you are as a spouse and as a parent. Make sure that your life is balanced, and you will feel better about tomorrow.