I've tried and failed many times in the past, but this time something is different. I'm currently about 3 weeks in and I didn't even plan on doing nofap, I only decided to stick to it about 7 days in once I realized what I can do.
Before I had a problem that I believe plagues 99.9% of nofapers and 100% of the failed nofapers. It is the build up of the sexual energy in the lower chakras which can only result in inevitable explosion, unless you learn how to pull it through the spine to the upper chakras. Now I'm using the term "chakras" here because it's the most popular term for energetic centers of human body, I'm not well versed in teachings that the term comes from. By opening the 2 lowermost chakras, you can instantly transmutate the sexual urge into power which can be used in any of the upper chakras depending on how far you pull it. I used to get very strong sexual urges several times a day and by focusing awareness to the pathway between root and sacral and then pulling it further up the spine to solar I learned that I can make the sexual urge die within 10 seconds after which I feel energized which can on a downside make it hard to sleep unless you learn how to direct it through the crown. With time, this process started happening by itself.
The problem is that attaining such ability is not easy and I really can't offer a concrete guide, only some guidelines. Meditate. A lot. Reach the state of perfect stillness. This is where the magic happens. Learn to control your awareness. Don't force it, the key is in the opposite - learn to let go. Awareness is like a magnet for energy and by focusing it on root you hook the energy which you can then drive wherever you want. But again and I can't stress this enough - don't force it. Working with awareness is opposite from working with muscles. You don't make it work, you let it work. I'd compare it to playing with a shy cat.
Also check out this clip: I know you'll find it cringe but it actually contains very useful advice, especially the part about water chakra which is a major concern for all of you.
https://www.youtube.com/watch?v=cH-HT9WCtiQ