LOGOS, ETHOS, PATHOS

I am one of the few students in this class who is not going into teaching after graduation. Up until last semester, my plan was to teach high school English, but instead I am going to grad school for Psychology. Even though I am not going to be teaching composition (atleast not in the near future, I assume anything is possible down the road) this class has given me tools that I can apply to grad school and hopefully to my clients when I am done with licensure, etc.
First off, any writing that is done with the goal of satisfying logos, ethos, and pathos is already to a good start. Many of the writers in the 15th and 16th century appealed to these same standards. It sucks your reader in and allows them to connect with you and your topic in an effortless way. This will help me when I am a psychologist because I have to be able to have a strong connection with my clients, and this will be impossible without the use of strong rhetoric.
I feel that logos, ethos, and pathos are a way that I can validate buying something that is a little too expensive or something I really don't need. For example, I am ADDICTED to buying designer jeans...it's my thing. Some girls have an addiction to shoes, purses, or jewlery, but I love to spend money on cute jeans (DON'T JUDGE ME!) Anyway, whenever my mom asks me where and how much my jeans were I automatically point out that they have a warranty or that it is a special denim that won't stretch/rip holes ---just to prove to my mom that there actually was some logic behind buying the jeans. Whenever I am doing this, I am simply pointing out the logos, ethos, and pathos that the jean company sold to me to validate the ridiculously high price....and it works all too well.