My son has been picky since he started solids at 6 months old.
But, all along, he has had no problems growing, is healthy, tall and lean and always in the upper percentiles for growth.
I feed him what he will eat. I show him other foods. But I don't force.
All on his own, as he has gotten older, he has expanded his palate. He now eats more things. On his own.
He knows what he likes or does not.
He is healthy.
He does not have eating hang-ups nor does he eat out of emotions or boredom.
We don't feed him junk.
He knows what junk is.
He is also a 'grazer.' Does not eat a ton per sitting. I don't expect him to.
I rather him go by his body's cues for hunger and fullness.
As soon as he is full, he says "I am full. All done."
When he is hungry, he says so.
That is good. He knows his body.
I am happy with that.
I don't use food as a reward or punishment either. Nor do I expect him to eat to please me. That would be 'emotional' eating. Which is not good.
I just cook what I cook. But I know that from what I cook, there will be something he will eat.
Again, I don't expect him to eat like me. But to eat and once he is full, that's fine.
There is also something called "Food Neophobia."
Here is a link on it, per ABC news:
http://abcnews.go.com/Nightline/Recipes/extremely-picky-e...
For me, I don't make it a big deal, to my son.
But I praise him when he does try something different.
He now likes artichokes, for example.
Never did before.
For me, what I have seen with my son, is that he has on HIS own, expanded his palate. And when he is hitting growth-spurts, he eats a ton and very varied.
But even with his picky-ness, he is very healthy and really grows like a weed. So I don't worry about his picky eating. Nor does his Pediatrician.
Food phases, occurs.
Even adults have that.