It's okay to differ, but if what you're doing doesn't work, consider trying something different.
Removing all negative talk about is what made the biggest difference for me.
And my reasoning is that what you focus on is what you get.
Even if I say, don't think about purple shoes, you'll think about purple shoes.
Or don't think about the number 345
There is evidence suggesting that focusing on negative words hurts your brain. check out this video around 11:00 TEDxConejo - Mark Robert Waldman - 03/27/10 - YouTube
Having said that, there is no question that negative things happen, and I don't deny negativity, as that's silly, but the point is I don't dwell on it.