Bf wants to me to be more dominant

Okay so lets start by saying I prefer to be submissive and I REALLY want him to get aggressive and take control. I’m aggressive/assertive in my normal life so surrendering that power in the bedroom is a huge turn on. But every so often he has said things like he wants me to take charge sometimes and I’m like... How? 😳

The most I take control is getting on top and even then I feel like I’m not doing that right... (Even though he finishes fast everytime.)

How to I get past this, I feel self conscious and a bit stupid about being more controlling in the bedroom.