Questions & Answers about Jestem z siebie zadowolony.
Literally, z siebie means “from myself” (or “out of myself”).
In this sentence, though, jestem z siebie zadowolony is an idiomatic way to say “I’m satisfied with myself / I’m pleased with myself.”
In Polish, the adjective zadowolony (“satisfied, pleased”) very often takes the preposition z + genitive to show what you are satisfied with:
- zadowolony z pracy – satisfied with (the) work
- zadowolony z wyniku – satisfied with the result
- zadowolony z siebie – satisfied with myself
So z siebie is the natural complement for zadowolony when the “object” is yourself. It doesn’t feel as strange in Polish as “from myself” would in English; it’s just the standard pattern.