ascetic
uh-SET-ikadjMeaning giving up comforts and pleasures on purpose; very strict with oneself
Memory hook a ROCK for a SEAT: uh-SEAT-ic. The hermit on the mountain gave up his soft chair and uses a rock for a seat; he gives up every comfort on purpose. He lives an ascetic life.
The runner kept an ascetic schedule: early bed, plain food and no days off.
In context The old sailor’s cabin was ascetic: a hard bunk, one blanket, a tin cup and nothing else, though he could easily have afforded more.
Similar austere, self-denying, spartan, strict
Opposite self-indulgent, luxurious, sybaritic
From Greek asketikos, “hardworking, disciplined,” from askein (to exercise, train).