The economy is affected by various factors out of your control

When you recognise economic patterns, you'll know that the current trends are expected and normal.

• Knowledge. Learn more about how the economy and stocks work. When you have better knowledge of the history of finance, you won't fall for too-good-to-be-true investments. Read good books on personal finance that have stood the test of time.
• Mindfulness. Knowledge will not give you full peace of mind, so practising some form of Mindfulness or Stoicism can help detach from money stress.