Will having psoriasis affect my lifestyle or quality of life?

It should not. If you want it to affect your life style then it will, ; if not then you should take control and start therapy. There are drugs right now that can take full control of it.
Psoriasis Lifestyle. Since psoriasis can affect any portion of your body, it can affect it in many ways: i can be embarrassing if it's on the face; it can be painful if it's on the genitals and also embarrassing; it can itch; it can be painful when it's in the skin creases.