As someone who has experienced a lifetime of back issues, absolutely.
Your pain will cause you to find a posture which doesn’t hurt. That’s probably not the best posture. That will lead to more pain to worse posture to worse pain.etc.
I did some physiotherapy somewhat recently. Traction was the best thing ever. Combined with exercise/physio routine and an awareness of posture, I felt better than I ever had.
It can be very challenging after a life of bad posture. Your body won’t like it at first. But keeping at it will produce wonderful results.
Assuming the pain is musculoskeletal and not something more serious.
Looks like a drafting square to be more specific.
For the old school draftsman working with pencil on a table.