Translation of "Centrarme" in English

Decidí centrarme en este tema.

I decided to get to the bottom of this.

Pero hoy quiero centrarme en un solo hallazgo:

But today I want to focus on just one finding --

Tengo que aprender a controlarme y a centrarme.

I need to learn to control myself and focus.

Antes de centrarme en el cerebro, que será la parte principal de mi charla,

OK, before I focus on the brain, which will be the main part of my talk,