It may seem like a good idea, but are you prepared for the consequences? Consider the likely outcome and think about what you can do to minimise the possible downsides.
There are tough days, stressful days, ordinary days, challenging days and awful days. But they're not like that for the entire day. Only parts of the day are usually like this, and you have to remind yourself that the rest of the day can be different. Don't let one moment or experience define your day. Treat your day as a play with different acts, or a marathon with different types of terrain: smooth, uphill, downhill or rocky.
Get away from your workplace and take your lunch break away from your desk. A change of environment can help to lift your mood.