Do we control our personality, or just our behavior?

I guess the way you answer this would be based on how you view personality and behavior… I think how we are and how we act are two distinctly separate entities… you may not? I dunno But I just noticed, that in talking about personality, where it comes from, the argument is the whole “nature v nurture”. That it’s either the genetics you were born with, or the environment you were raised in. But I feel like it’s never argued that you have input on the whole decision… is that a given that I’m missing??
So do we control our personality? How much control do you think we have? Do you think you have?

Do you like the person you are? And either way, do you feel that you got a say in how you are? Or simply how you act? Or not even that? Do we define ourselves? Or are we just defined, and then are?