I don’t know how i feel about my self and therefore also about my relationship

I’m in a having a mentally hard time in the last 8 months. Most of if comes from stress and the problem that I have with life choices (i would like to make some but I don’t know how or why to chose). I’m talking career wise, where to spent life (country/city). I have a relationship that is really nice and comfortable, even if this new, it works and I really like him. I need some advice tho and some help maybe because I don’t know why but I often get annoyed by my partner and I don’t fully know why. I know that I don’t like how he acts sometimes but I don’t think that is (rationally) a good reason bc he doesn’t act weird/bad, I just get frustrated with him almost like is out of nothing. I don’t adresss it tho bc I think is unreasonable And I don’t think he deserves it (he is always really nice and thoughtful). I don’t like to feel like this, I think in the long run it can be bad for us and I think in the short run he is noticing and I’m confusing him. I often think is bc I don’t know what I want (like what I want to do one night or what I want to do in vacation) so I take whatever he likes and roll with it but at the end nothing excite me of what he chooses and I’m angry with my self bc it’s not that he didn’t gave me a choice, is more like I don’t choose and then my brain needs someone to be mad with and picks him. I don’t like to feel like this and I don’t like the possibility on making him feel bad.