I suppose the following expression is idiomatic
I’m the kind of person who needs new challenges to stay focused. I might even start my own business, because that’s something I’ve always wanted to do at some point in my life.
Obviously, "at some point" here refers to "a particular time in the future"
An ELL post("At one time", "at some point" or "one time"?) gives these examples
I injured my back so badly, that at one time I couldn't even walk.
I injured my back so badly that at some point I couldn't even walk.
Both are used to talk about past.
Another post (At some point "in future" or "in the future") uses "at some point" to talk about future.
I guess "at some point" could be used when talking about past though, it is more commonly used for future while "at one time" for past. Is my understanding?