Picky eater

I am blessed with a child who loves to play, give kisses and hugs, learn new things every second, and enjoys life like no one I have ever seen. He craves knowledge and is curious about everything. He seeks out the world and all that it offers. He would live outside if he could. He is just the most amazing fella in the world. He is also the pickiest eater.....seriously, the pickiest! Will not try new things without a fight. Hates anything with a different texture. Despises eggs and won't even look at veggies. Is happiest with a slice of cheese and crackers and some fruit....then tomorrow won't want fruit at all. When we started "real" food, he was anti meat.....all meat. I tried everythng. Now he will eat chicken and hamburger meat at times. Says a big no to anything spaghetti like...noodles are spit out immediately. Loves ketchup and ranch, so I have tried smothering things in that....nope, he wasnt falling for it! Is this a phase? If so. It has lasted 6 months. The doctor isn't worried because he is of normal size and measuring super tall. But this momma is exhausted at the end if a meal. So, parents, help? ideas? Advice?