"Mother knows best"? Not according to your kid.
You know your child has so much potential, but they hesitate to put themselves out there. You remind them of all their great qualities -- they brush it off! Or you highlight their talent in XYZ -- they play it down. You make a suggestion to try XYZ activity that would be perfect for them, and they immediately push back. You just want them to thrive... so WHY won't they just listen to you?