Anytime there's separatism going on. It happens all the time, because the illusion before us is that we are separate. It gives us this sense of egoic identity, which is lovely in its own way.
It is a dear and lovely disposition, and a most valuable one, that can brush away indignities and discourtesies and seek and find the pleasanter features of an experience.
Just to paint is great fun. The colours are lovely to look at and delicious to squeeze out. Matching them, however crudely, with what you see is fascinating and absolutely absorbing.