The threefold law, as mostly understood today is a misrepresentation of what it originally was. In Gerald Gardner's book (Gerald Gardner is the founder of Wicca, as I'm sure you aware of) High Magic's Aid he explains that when a witch receives help or a favour from someone then the witch must return the favour three times. At no time did Gardner proclaim that whatever spell you do will return to you threefold, tenfold or whatever.
You'll see and hear people telling you never to curse anyone because it will come back to you and you will pay for it heavily; but if you know how to cleanse yourself immediately after execration work then this won't happen. You do, though, have to pay for all spells, whether that is by an offering to the spirits who helped you, or if you did a working to get a better job then you're going to have to pay by working harder and longer, for instance, etc. etc.
There is no three-fold law, never has been. If you click on this site it will explain it:
https://gardnerians.wordpress.com/20...d-law-in-wicca
That doesn't mean, though, that if you are constantly negative and angry that you won't attract more negativity - because that's how your being is vibrating and it will attract those vibrations and energies.