If you're always sore by your breastbone what should i do?

Try Heat, NSAID: This may be an inflammation of the cartilage that attaches the ribs to the sternum, or breastbone, called "costochondritis". Sometimes this is caused by upper body workouts or heavy lifting, and it can take weeks to slowly resolve. Try a heating pad to the area, avoid heavy lifting or upper body weights, and try some advil/aleve in safe doses. If symptoms continue, see your doctor.

Costochondriitis: Inflammation of the cartilage which attaches the ribs to the sternum is called costochondritis. You can use anti-inflammatory meds, and avoid lifting or carrying heavy objects for a few weeks.