Hi again 
You do not need to have any special postures or breath in any special way. Either lay down or sit in a comfortable chair, preferably with your back supported and erect. You want to be able to relax without falling asleep.
Focusing on your breathing is a form of observation which can lead into mental vacancy. However, you want to learn to observe your thoughts so it is best to practice that.
I have followed these meditation procedures for a few years now, and it is very effective. Before I found this way of learning to meditate (from the book Initiation into Hermetics) I was very confused as to what meditation was. With regular practice I have found these exercises very effective without having to worry about breathing in strange ways or sitting in odd positions.
Meditation involves all three to some degree: Observation, Focus, Vacancy. If you are new to meditating it is good to isolate each technique and practice it separately to strengthen it. You can meditate on a situation by focusing on the situation (thinking about it) or asking a question, and observing the feelings/thoughts that arise.
Meditation makes you more aware, it won't necessarily get rid of your problem. Once you are aware of the issues, you can then transform those thoughts/qualities to your benefit.
The reason practicing mental observation will help you is that in ordinary states you become more observant of your mind! So, before you may not have noticed your thoughts... but after practicing for a few weeks you will start to be more observant of your mind in general.
I hope this is clearer now.
Paul

You do not need to have any special postures or breath in any special way. Either lay down or sit in a comfortable chair, preferably with your back supported and erect. You want to be able to relax without falling asleep.
Focusing on your breathing is a form of observation which can lead into mental vacancy. However, you want to learn to observe your thoughts so it is best to practice that.
I have followed these meditation procedures for a few years now, and it is very effective. Before I found this way of learning to meditate (from the book Initiation into Hermetics) I was very confused as to what meditation was. With regular practice I have found these exercises very effective without having to worry about breathing in strange ways or sitting in odd positions.
Meditation involves all three to some degree: Observation, Focus, Vacancy. If you are new to meditating it is good to isolate each technique and practice it separately to strengthen it. You can meditate on a situation by focusing on the situation (thinking about it) or asking a question, and observing the feelings/thoughts that arise.
Meditation makes you more aware, it won't necessarily get rid of your problem. Once you are aware of the issues, you can then transform those thoughts/qualities to your benefit.
The reason practicing mental observation will help you is that in ordinary states you become more observant of your mind! So, before you may not have noticed your thoughts... but after practicing for a few weeks you will start to be more observant of your mind in general.
I hope this is clearer now.

Paul