It hinges on association. Hang with the siddhas or the near siddhas. Otherwise being with others who are physical body prone, will result in immediate rebirth under dubious conditions.

Someone who is resistant to rebirth can help one who is not so resistant, if the association between those persons is reliable.

Whatever experience one is attracted to in physical existence which may pull one into a rebirth should be known by careful introspective meditation. Then one can find a way to neutralize such rebirth desires.