Ezra 10

Now then make confession to the LORD, the God of your fathers and do his will. Separate yourselves from the peoples of the land and from the foreign wives.  Then all the assembly answered with a loud voice, "It is so; we must do as you have said. (Ezra 10:10-11, ESV)

I remember listening to Pastor Chris teaching on repentance many years ago.  He would always tell us that repentance looked like something....that you could, in effect, see it.  It was about doing a 180 degree turn and going in the opposite direction of where you had been headed.  That picture he painted has been very helpful to me over the years.  The two essential elements of repentance are here in the above verses...

Confess....meaning to agree with what God says about your sin and

Do His will...taking righteous action to separate from sin.

Repentance is a decision to stop whatever it is that you are doing that is sin and instead do the will of Your Father in heaven.