It's never too late to be what you might have been.
We've all missed opportunities to do what is right. Don't focus on the opportunities lost; rather, focus on what God puts in front of you today. Serve Him well.
For the one who sows to his own flesh will from the flesh reap corruption, but the one who sows to the Spirit will from the Spirit reap eternal life. And let us not grow weary of doing good, for in due season we will reap, if we do not give up. So then, as we have opportunity, let us do good to everyone, and especially to those who are of the household of faith.