How to deal with a bad boss in the field of architecture?

(Sorry about my bad grammar). Am an
Architect living in Ethiopia. Its been 15
months since i started practing
architecture. I got into my current firm
after a long, tiresome and sometimes
hopless search for a job. It took me 8
months to find my current job.
Architecture jobs in general are hard to
find here in Ethiopia. The first few
months in this firm were good.. i was
exposed to a variety of projects and
work loads were minimal. Me and my
boss used to get along very well. But as
time passed by my boss has become a
pain in the ass. He constantly try to
manupulate my designs into his ways..
he yells at me if i try to defend my
ideas.. (I've seen his own projects..
they're mostly non aesthetical, copied
from the internet or are not constructed
due to many design related issues).. as
a result i try to defend my ideas when i
present it to him but he usually
sketches on them and manupulates
them into an ugly, non functional
designs. I get mad but try not to show
off. The work load is so heavy on my
side while my colique just watch
youtube all day. when a new design
comes my boss calls me and assigns me
to do it..he usually ignores my colique.
why is that???.. i soooo want to quit this
job but like i said architecture job are
hard to find here so i rather quit this
job once i get ahold of another job. Or
should i just quit?