I would agree with Rick. A picture would help some, but it sounds like it is worn/tired, especially if it was the blade of choice for most duties. If it hasn't been used, then a poor heat treat may be the likely cause. Not much cost effectively you can do to "repair" it, without replacement work. If it has sentimental value, you may find an embellisher, or skilled repairman...but it would cost much more than the knife is worth, under normal circumstances...JMO.
Bill