It is for this reason, and also of course, ethics that you should never try this, no matter how angry or upset you may be at another!
And let's not forget that spells ten to work by giving you what you need, not what you want. Case in point, a money spell will most likely not event in providing you with a million dollars but it will provide you enough to get by.
Before you cast any spell, you must think it through first. If you are doing it on impulse and might regret it later, perhaps it is better to think it through first.
Magic can produce great changes in your life so be sure to use it wisely and only if you are true and sincere about what you want.
Once a spell has ultimately delivered on its purpose, you should destroy it. The best way to do this is simply by burning the ingredients.