I've gotten to the point lately that I don't have negative thoughts. When I swing correctly, it's glorious. My big error is a push and/or hook, which is a result of a recent swing change (which has improved my ballstriking by 100%, I'd say). I've got to quiet my hands down, because they'd been doing a lot of compensating before.
But now, when I catch a ball crisp with my driver, it's in the air for sooo long. I can count 5 seconds off before it hits the ground, and that's being conservative with it. Irons are much better as well.
Honestly, what I'd suggest you do is work on your swing. I never think about topping it because it almost never happens to me, and if it does, I think "that was an odd swing". Once you can get your average swing to be one that delivers what you expect of it, any "negative thought" is unnecessary, because a negative outcome becomes the minority of your shots.
Have faith in yourself- but make sure that faith is warranted!
(This advice will cost you one CT250 + BB Solutions shaft

)