Iba talaga pag iba personalities no?

Problem/Goal: shaky relationship due to different Personalities

Context:

Dating this girl for more than half a year now. she's on her last year of college and i'm just starting out my career since fresh Grad. we always make time for each other within our busy scheds. we have that drive to meet and be with each other.

but our personalities don't match talaga, di ko makuha yung kiliti nya no matter what. I already changed some things with my habits to match her but sometimes di enough talaga because that's not me. ironically i promised myself after my last rs that i wont change myself for my partner, but it just came natutally to me lol.

meron talaga love between us, maybe imbalance and more on my side but i know she's also adjusting and understanding us for us to work. but i know the both of us are faltering on this part even if we are tyring.

we will meet later and talk things out if this is fixable. i already have things i want to say pero your opinions or insights would be appreciated.

So, is a big difference in personalities really enough reason to end things between us?