Practice Systematically 

At the time of meditation, it is extremely useful to deal with each level, one at a time, going from outer to inner, from gross to subtle. The process is like this: 

• Practicing systematically means first having a good environment that is clean, comfortable, and reasonably quiet (an advanced meditator can meditate even with external sounds in the environment). 
• Then you prepare the body by washing and emptying bladder and bowels.
• Then you work with the body, whether through yoga postures or another form of making the body flexible. 
• Then comes the breathing practices. 
• Then deal with the levels of mind. 
• Then begin to go beyond the mind.