Today is the first day of the rest of our lives. It's never to late to start anew! Many of us are right there with you. Let's do it - starting today!!
"My body is the temple of the Holy Spirit who is in me, whom I have from God, and I am not my own. For I have been bought at a price, therefore I will glorify God in my body and in my spirit, which are God's."
(paraphrase of I Cor. 6:19-20