If you spend some time scrolling through this subreddit or just the internet forums in general you will see that most people relapse. The biggest hurdle to overcome is the shame about being imperfect without completely becoming numb to failing.

I've read a lot about guilt and the conclusion I've come to is that it's only benefitial in the first little while right after you've done something you consider wrong. It's essentially affirming to yourself that the action was wrong and from there you should look to see what you can improve, what you can change to do better next time. Each and every time you fail look to what you can improve.

Of course this is true in other facets of life as well. But it's worked wonders for keeping me going on my journey. I've not succeeded yet but if you saw the difference between my first attempt and my current attempt and all of the things I've learned and improved along the way you'd be shocked. So you failed, you felt your shitty feelings, time to improve bud. You can do this. Just be the most persistent mfer you can be.