For myself personally I found mindfulness meditation helping with anxiety. It is however like any excercise: it does not show effects without regular practice over months. And it is not the sitting session itself that helps as much as developing a skill, and habit, of seeing your mind clearly doing what it does. That is applied outside the meditation coushion.

Hard to give general advice, but I've personally had great success breaking looping thought patterns with labeling.

https://www.mindmate.org.uk/wp-content/uploads/2018/11/label...