Hide not your talents, they for use were made. What’s a sun-dial in the shade.
Being humble is a good thing.
Being too modest about your talents is a bad thing.
While you should not brag about whatever you are good (or bad) at, you should not hide it either. Chances are, somebody needs your certain set of skills, but as long as they don’t know of your talent, nothing happens.
Show people what you are made of, do not be afraid of promoting your skills, do not be afraid of self-confidence.