I tried to create a map of the mind, but it got very confused. I have drawn up a description of how the mind works instead.
The heart (chitta) holds memories and past experiences. It brings up emotions and automatic responses to things (like feeling scared when we see something that hurt us in the past)
The intellect (buddhi) which decides what is true and what is false.
Discursive mind (manas) is that bit of the mind that is always thinking. The bit that we often consider to be ourselves.
The senses – taste, sight etc..
The watcher – which is our consciousness that observes what is going on in mind and outside.
If we give our attention to discursive mind it makes us unhappy. In a wise person discursive mind is just the bridge between the senses and intelect and the heart.
Unfortunately, we cannot see the workings of the intellect so we often ignore it and try to act upon what discursive mind is suggesting.
Mindfulness and meditation are ways of escaping the dominance of discursive mind and allowing the intellect to make decisions for us.
Today I am feeling strangely peaceful, discursive mind is quieter than normal. I want to encourage this and to use it beneficially so I am going to stop doing all this thinking and play my guitar.