When things went wrong, talk it out to someone.
If that thing that went wrong is regarding a person, talk it out to that person.
Go and get to know what is going on in their mind and discuss what is the next step to resolve the problem.
Honestly, you will feel better after talking it out.
All those unnecessary thoughts kept in the mind will only add worries.
By worrying, it doesn't change anything and it is a complete waste of time.
It messes with your mind and steals your happiness.
Discuss it out and change those into actions.
Things will get better instead.