You might be interested in skimming through Part III and Part IV of Ethics, written by Spinoza in 1677[1]. He is a very sharp observer of how states of mind occ

You might be interested in skimming through Part III and Part IV of Ethics, written by Spinoza in 1677[1]. He is a very sharp observer of how states of mind occur, react and develop. His attempt to apply mathematical rigor to his observations is interesting in itself, but might provide for a perspective that is useful. It has been for me ;) [1] http://www.gutenberg.org/ebooks/3800 http://www.gutenberg.org/ebooks/3800