Whatever happens, happens.
The moment we realise that something has occurred, it already has, it’s in the past.
Therefore, we can not change it.
However, a great deal of energy is often spent on not liking what has happened, and deny it or even wanting a different outcome to occur.
Once we reach a point of accepting everything as it is, then we can take all the emotions and mind activity out of trying to change or deny it. This then allows us to take action, if needed, from a place of calm and acceptance within.
Our mind, which is an amazing tool, is then free for us to use to look at solutions now.
The other thing is to not them go into future projections as to what may occur as a result of a happening. Just stay present, and the mind will be silent. We have no way of knowing what might occur as a result of something, so again best to not think about it and remain at peace within.
The essence of all things is to use the mind as a tool and not allow the mind to control us with its thoughts of past and future.