“If I would have handled that differently I’d be better for the kingdom of God”…some of us define ourselves based on circumstances of the past. 
Then there is “i am just waiting for the day to see how the Lord will use me” …some of us choose to define ourselves by our future.
But I want you to see how God defines you right now, in this moment: His. Redeemed. Part of the functioning body of Christ. Worthy of the blood sacrifice from his only begotten Son. You, right now, are loved, cherished and useful to the King of Kings. 
Let that define you.