Generally, doing sports is a good way to let your mind relax.
Apparently the way to handle intrusive or nagging thoughts are mainly two ways.
The first way is to realize that thoughts come and go. They are backround noise. Not every weird thought, or worry, that pops in your head is "you". One can observe the thoughts, from a mental distance, without judgement, without owning them.
The second way is to actively distract yourself. Either by doing something that occupies your full attention. Or, not following a line of thought, conciously, actively thinking about something else.
You can try to make it a habit of not actively thinking too much about the things you cannot change. Instead, actively think about the things you CAN change.
Apparently the way to handle intrusive or nagging thoughts are mainly two ways.
The first way is to realize that thoughts come and go. They are backround noise. Not every weird thought, or worry, that pops in your head is "you". One can observe the thoughts, from a mental distance, without judgement, without owning them.
The second way is to actively distract yourself. Either by doing something that occupies your full attention. Or, not following a line of thought, conciously, actively thinking about something else. You can try to make it a habit of not actively thinking too much about the things you cannot change. Instead, actively think about the things you CAN change.