you’re definitely not alone.
there are so many teens out there who ‘don’t know who they are.’ and plenty of non-teens too, come to think of it.
truth is, most of us carry uncertainties around, and i think that the biggest nisayon in this case is not letting them overwhelm us or convince us that we’re bad ppl just b/c of those probablematic hashkafos, or aveiros, or wtvr it is.
i think that a good idea is to get a rav who never knew you before (or a rebbetzin/wtvr.), this is what i did, and talk to him/her, ask your questions, air your difficulties, etc.
it really helps.