"I have Neptune in transit opposing or squaring Neptune in the birth chart. What is involved ?" What can it mean to have bad form Neptune aspects such as quadrature and opposition with our natal Neptune ? What a way to give an unfavorable passage of Neptune on the planet Neptune in our birth chart ? What does it mean to have the planet Neptune square or opposed natal Neptune ? The transit of Neptune quadrature and opposition to natal Neptune which carries positive connotations for us ? Which are meaning, significance, sense of the planet Neptune in transit in square or opposition at the birth Neptune ? Having this planet in bad aspect and then square (90 degrees) or that form an opposition (180 degrees) with the planet Neptune can bring important significance not only on a personal level. Let's say, however, that not take into consideration the position of Neptune in the 12 astrological houses and then Neptune transiting Neptune which is in I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII house. This is because Neptune is a generational planet, and therefore its influence rather than on the individual and therefore on its areas of life takes place and acts on an entire generation, an entire community.
Meaning : your imagination playing tricks on me and maybe exchanged the illusion with reality. You should try to get your feet and your mind firmly on the ground without making exaggerated flights of fancy, and that there would lead to nothing. You are in a period of great confusion and may experience bouts of depression.