The steps to activate the personal income function in Douyin Express are as follows:

1. First, make sure you have registered and logged in to your Douyin account.

2. Secondly, in the Douyin APP, click the [My] button to enter your personal homepage.

3. In your personal homepage, find [Creator Center] and click to enter.

4. In the Creator Center, find the [Earnings Analysis] option and click to enter.

5. On the earnings analysis page, you need to complete real-name authentication first. Follow the prompts and submit photos of the front and back of your ID card and face recognition.

6. After completing real-name authentication, you need to bind your bank card. Click [Add Bank Card] and fill in the relevant information as prompted.

7. After completing bank card binding, you need to verify your mobile phone number. Click [Mobile Number Verification], enter your mobile phone number and complete the verification.

8. After completing the above steps, your personal income function can be activated.

Please note that the above steps are for reference only, and the specific operations may change due to version updates and other reasons. Please refer to the actual operations in the APP.