1- Eat less
2- Occasionally give up some comforts like sleeping on the floor without a blanket or pillow. It makes you humble and strong.
3- Remember death 20 times a day
4- Be familiar with the lives of Ahlulbayt (a). You can read this series:
https://www.al-islam.org/person/baqir-shareef-al-qurashi
5- See this lecture:
https://youtu.be/QYCjENAIoUU