be your strong point/suit

be (one's) strong point

To be something, such as a subject, activity, or field, at which someone is particularly skilled or adept. Working with computers was never my strong point, so this receptionist position is going to be a real challenge for me. Movie trivia is one of Sam's strong points, so I think we should ask her to be on our pub quiz team.
See also: point, strong

be (someone's) strong suit

To be something, such as a subject, activity, or field, at which someone is particularly skilled or adept. Working with computers was never my strong suit, so this receptionist position is going to be a real challenge for me. Movie trivia is one of Sam's strong suits, so I think we should ask her to be on our pub quiz team.
See also: strong, suit
Farlex Dictionary of Idioms.

be your ˈstrong point/suit

be a thing that you do well: Writing letters has never been my strong point. Logic is definitely not his strong suit.
See also: point, strong, suit
Farlex Partner Idioms Dictionary
See also:
  • be (one's) strong point
  • be (someone's) strong suit
  • strong suit
  • long suit
  • long suit, one's
  • strong point
  • better than
  • a/one step ahead
  • one jump ahead
  • one step ahead