Great thread
I think what works to get rid of negative thoughts varies from person to person.
Like chuckiecow I find turning the thought to the opposite doesn't work from me, I know I am lying to myself, the big knot in my chest tells me so.

I know what the LOA should feel like!
18 years ago I was visiting a friend of my bosses and when I arrived at her house I got out of the car and knew with absolute certainty that I would live there, this wasn't wishful thinking or wanting but knowing with every cell of my being.
It was a beautiful moment the has led to so many wonderful things, and yes I moved in 6 months later

When I have a negative thought I use gratitude to change the way I feel.
If I was having difficulties in a class I would send lots of gratitude and love to the teacher who is there to help me learn.

If some one looks like letting me down I send them thanks for everything that they have done for me and for doing their best.

If the car is playing up I thank it for all the times it got me to my destination

Sending out love and gratitude is the way that works for me