It was no problem with me, the only thing I wouldn't eat was brussel sprouts. However, that has become my major problem. I like nearly everything

-- except that I will not eat thick pasta. It has to be angel hair pasta, or I won't eat it. And, I still hate brussel sprouts!
One of my grandsons would only eat mashed potatoes for about six months. His parents went along with it (this was when he was two). Now he is nine, and he is a good eater.