Well actually, I have something that will probably brighten your day and help you with your choice.
I spent my whole day in the library because of this problem that occured to me the first time I knew that magic wasn't a trick. And by getting deep into some really deep books, I found out some pretty useful details.
Magic IS a sin IF it involves hurting someone. God forgive people often and would like you to be like that too, so using something powerful only to hurt and ravage is not appreciated. However, using it obtain more money is fine, as long as the spell you use don't seal from people to give you.
Also, Spells that kill someone's will and ENTIRELY force him to do something that will be bad for him/her are forbidden.
Magic is like a simple act. The bad is a sin, but the good is fine.
As long as you're not hurting/Stealing/Killing.....Someone, it's okay but God will never punish us for something that is good for us.
But then again, we shouldn't just go and use Magic for every single thing. We must make some effort, therefor some things CANNOT be fixed by magic.