Our physical body is our friend. Physical desires are good and sexual relationships are good. At least all of these things could be if we allowed ourselves to have them and enjoy them.
By believing there is good in everyone we confront the good in ourselves.
Positive thinking colors neutral events in a positive way. Negative thinking colors neutral events in a negative way. To color things in a positive way makes life more pleasant!
By now it should be clear that "all inputs are valid" doesn't mean total acceptance of every harebrained idea that comes along. It means putting everything into its proper perspective. It means that everything belongs, not that everything is true.
If someone believes the world is flat, they will act as if the world is flat. If you want to deal effectively with this person you must take their beliefs into account because beliefs guide their actions, not reality.
You can live a spiritual life in a physical body and enjoy the full spectrum of what life has to offer! This is the path of the organic Gnostic! The true goal in life is the spiritualization of the physical. Manifest heaven here on earth!