I am looking for a Japanese word that corresponds to life goal. It does not refer to getting a good salary job, marrying with dream S.O., buying exotic cars, or other materialistic/worldly targets. But there may be a philosophic and existence-questioning version of the goal, maybe purpose of living.
I think 自己実現(Self-actualization) is appropriate for the word you are looking for. It means 自己の内面的欲求を社会生活において実現すること. That is "to become exactly what one wants to be". https://kotobank.jp/word/%E8%87%AA%E5%B7%B1%E5%AE%9F%E7%8F%BE-73074
悟り is the word for buddhists.