I mostly swing trade because I don't have much time to day trade often, and I'm simply less skilled at day trading as well. I've tried daytrading and other types of shorter timeframe trading styles many times in the past and it's really never worked out well for me, though there are definitely people out there who are very skilled at daytrading and scalping.

Even if you're daytrading, it's important not to overtrade, though. You can get burned out really quickly if you're overtrading and potentially end up in bad positions. If things don't feel right, even though it can be hard to stop, just don't trade 'till you feel better. It's always best to just sit out rather than lose money.