1, sit up straight, don't lie down, you may fall asleep when you lie down, and fast before meditation, not necessarily sitting cross-legged, but sitting in a chair. Bathing before is helpful for meditation, and it is best to meditate in the morning.
During meditation, people sit quietly and concentrate on their breathing. As air enters and exits through the nostrils, people are immersed in their own feelings. Let thoughts flow into your mind, then brush them away gently, and breathe them away.
3, think nothing, no distractions. It's hard to do this. One way is: Whenever an idea comes into your mind, you should consciously throw it out.
After a while, you can learn how to get rid of other ideas. You are no longer controlled by ideas, and you begin to find your true self.