Coping skills are not one size fits all , so its best to try all kinds and find out what helps you the most.

Breathing exercises are a huge help and pretty easy for most everyone to learn.
Mindfulness .. My favorite
Exercise
Yoga
Meditation...there are many types
Distractions Distractions Distractions TV shows, Silly you tube videos
Adult coloring Mandala's ..Very helpful and fun.
Any kind of hobby.
Wander your neighborhood or park taking pics camera or cell phone.
Cleaning for me is a huge help in dealing with racing mind