negative emotions are useful indicators of both your instincts and your beliefs:

• If you’re feeling sad or down, you’re probably unhappy with your own behavior or the effectiveness of your response to events. You might be thinking that something has gone wrong and that it was your fault. Be careful not to leave sadness unattended or it can slide into hopelessness and the belief that you’ll never be able to make things better. Instead, let sadness prompt you to change: Look for small actions and steps to make headway and improvements.
• If you’re angry, you may be experiencing a fairness issue of some kind, and the anger may be telling you about a sense of violation or something that needs to be set right.
• If you’re afraid or don’t feel safe in some way, you may sense that something bad is going to happen but you’re not sure what it is or how it might damage you. Or perhaps you don’t trust upcoming events or the people involved. Your fear can alert you to do extra preparation and contingency planning so you’ll have your best shot at success.