Understanding 'worrier' includes recognizing the emotional stress it implies, more than just occasional concern. Even though she's a worrier, Lisa manages to handle difficult situations well.
Pro Tip 2/3
Not Always Negative
'Worrier' might sound negative, but it can sometimes imply that the person is careful and conscientious. As a worrier, Mike double-checks everything, which often saves the team from mistakes.
Pro Tip 3/3
Collocation Context
The term 'worrier' can be intensified; 'chronic' implies constantly worried, 'compulsive' suggests uncontrollable worry. His compulsive worrier tendencies make it hard for him to relax.