Anapansati-Breathing meditation

Lord Buddha was the first man in the whole history of humanity who made it absolutely clear that breathing and thinking are deeply related.
Buddha says: watch your breathing, let it be normal,as it is.Sitting silently,watch your breath.The sitting posture will also be helpful,the buddha posture, the lotus posture,is very helpful.
Watching your breath, slowly slowly you will be surprised that as your breath becomes calm and quiet, your mind also becomes calm and quiet. And watching the breath will make you capable of watching the mind.
That is just the begining the first part of meditation, the physical part. And the second part is the psycological part.Then you can watch more subtle things in your mind-thoughts,desires,memories.