A thread is only effective when it effects you.
If you can simply say "So?", the thread becomes useless.
Living in the moment and detachment from outcomes can help yourself to come into a state where you can say "So?".
You can also focus your attention on the large scale. Does it really matter in 30 years whether the other person makes their thread come through?
At the same time, don't forget to practice
unconditional love.