Sadly I'm not talking about gifts, but tenses.
My novel is written in the past tense, although I did experiment with the present tense early on. I've just been reading someone else's present tense novel. It really tainted my work...
Every time I sat down to edit, I found the present tense had crept in. It happened every time, while I was reading that particular book. It made me wonder if I'd made the right decision in the first place, although I think I have. It doesn't take much to make you question yourself, though, does it?
I shall choose my reading material a bit more carefully while I finish editing, though. What drives you mad while you're editing?