Netzach is often referred to as the 

Last Stronghold of the Personality

On the Tree of Life Netzach is where we explore our Feelings and levels of Self Worth

Unlike the logical, analytical energy of Hod, Netzach can sometimes throw us off balance when we discover the force of our desires and feelings. 

How we feel influences the sort of images we build in the mind which subsequently feed into our subconscious. 

Our subconscious governs how we emotionally react and respond. 

The triggers we respond to are reflected in the way we behave in our everyday life.
Study of this sephirah can help us to boost our Self Worth and gain Victory over our Feelings.

More on Netzach can be found in the Netzach workbook.
Complete series of Practical Qabalah (Tree of Life) workbooks available