Self Restraint
Noun, する verb, and の adjective
じせい
私としては、断然フランボワイヤン様式の方が良かったんですが、そこはまぁ自制しています。
I definitely prefer flamboyant styles, but I practice self restraint.
Self control is self control and self restraint. Have some!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.