How to disentangle from negative thoughts?
Just keep recognizing it; don’t judge it – it is just a thought. Just keep stepping away from it – ‘Oh, this is happening now; this thought is happening now’. Don’t feed it.
Vipassana practitioners remember this formula: whatever arises, step back and recognize it - ‘Oh, I know you now’. And when the next thing comes up, recognize it and step back from it.
And, appreciate the awareness.