If you’re a Believer, then you’re not the product of your past mistakes. Jesus has forgiven you and made you something you could have never been without Him. Also, the future you won’t be the product of your future mistakes. You have been equipped to find maximum success.
When I was a teen I absolutely loved riding my 12 speed down the hill behind the zoo. It was so steep that I could pick up incredible speeds that would make it feel like my body was lifting away from my bike. On one particular day, though, I got brave. I picked up a ton of speed, and started coasting. Then I stood on my peddles and let go of my handle bars with my hands lifted to my sides (back in my day it was called “surfing”). Unfortunately, my front wheel entered a speed wobble. As I was standing up, hands out at my side, I looked down and was horrified to watch my handlebars chaotically turning side to side, hitting my frame. Coasting (particularly while standing on a bike) can be dangerous. Coasting in Christianity can be eternally deadly.
I wish it wasn’t the case, but after 30 years I’m still tempted to sin. It’s hard to talk about “the old man” coming back to life because I became a Christian when I was 13. The reality that we are all faced with is our struggle against our sinful nature. Sin is alive and active, making promises to us that it can’t fulfill.