There are four main reasons you’d need to change or undo a spell:
Your spell has manifested, and you no longer need it.
Your spell has manifested, but you realize that you didn’t actually want the thing you’ve manifested.
Your spell is not manifesting.
Your spell is manifesting different than you expected.
Changing or reversing your spells is similar to fixing any kind of other mistake you make in life. You look at your options for problem-solving, and you pick the best solution.
The first step is to release any blame or judgment on yourself. Remind yourself that these things happen and beating yourself up will not help.
The next step is to brainstorm ways to fix your mistake. Think about all the ways you’ve solved problems in the past. For example, if you add too much sugar to a cake recipe, maybe you can try to scoop some out (if you haven’t mixed it in yet), or you can increase the other ingredients proportionally so it all evens out. Then you’ll have two delicious cakes instead of one overly sweet cake.
If you don’t think there’s any way to save your cake batter, you can throw it out and mix up a new cake.
The magical equivalent to scooping out the sugar would be to reverse your spell. Go through the entire process in reverse if you have to, using ingredients and magical tools that do the opposite of what your original intention is. Comb through the entire structure of your original spell, and figure out what the reverse of each step would be.
If you’re in the middle of the spell, and realize your error, you can perform whatever steps you’ve already done in reverse. Then once you’re back at square one, you can recast your spell the correct way.
Another option rather than going backwards would be to shift the intention of your spell midway through your spellcasting. If you catch your mistake early enough, you can pause your spell and change your intention. This can be as simple as re-wording your intention, or creating a different visualization. Maybe you realize halfway through that you don’t actually want to banish someone from your life. You’d rather manifest an opportunity for yourself to move to a new state. That’s fine. Pause your spell, readjust your intention, and continue on.
The last option is to cut your losses and start from scratch. In witchcraft, that would mean taking whatever ingredients you’ve used in your spell and burning them. Keep in mind, this method only works if your original spell was not cast with fire magic.
Once you’ve (safely) burned all of your magical ingredients and you’ve learned from your mistakes, you can cast a different spell that will correctly manifest your desire.
A more unconventional way to change your spell is to acknowledge that the spell has manifested and to perform another spell on top of it. You’re “continuing the spell” while changing the direction slightly.
It’s kind of like saying “Double or nothing,” when you lose the first round of a bet.
In your mind, you can consider the first spell as your “chapter one” and your next spell is a continuation of the story—the next chapter.
If your first spell didn’t pan out the way you wanted, perform another and check out your results. Notice if you improved the situation.
Use this method with caution. You risk getting yourself into an even deeper mess and draining your energy at the same time. Spend some time meditating and journaling before you decide to continue your “double or nothing” spell. Only use this method if none of the other spell reversal techniques will work.
Now that you know the parts of a spell and the importance of each one, you can make educated decisions on how you will structure and perform your own spells. The more you practice, the more these steps will go quickly and use less energy. You might even find that you begin performing these steps automatically. I recommend experimenting with each part of spell structure and exploring ways to make these practices fit your needs, your style, and your environment.