Both acceptance and approval are, quite plainly, audience-related issues. For artists who thrive on confrontation, rejection is not a problem, but for many others the constant wear and tear takes a toll. For those artists, survival means finding an environment where art is valued and artmaking encouraged. The teacher watched the entire film in silence, and as the viewing ended rose and left the room without uttering a word. The lesson here is simply that courting approval, even that of peers, puts a dangerous amount of power in the hands of the audience.
Audience comes later.
The only pure communication is between you and your work.