HAVE A PLAN AND STICK 2 IT!!!

If you are not in position before the earnings, better to stay in cash. Don't take unnecessary risk on the earning announcement. Especially if you are a short term trader.
If you are already in a position as a long-term investor, follow your original plan. Plan your entry, timeframe, stop loss, target. Do not be afraid of the fluctuations.
Do your research and follow your gut. Remember at the end of the day it's your money and you are always going 2 have your best interest at heart. So your opinion is the most important one. Best of luck.