Yes, The Beatles ARE right.
I am happy to see topics like this and people thinking over them. Love yourself. I've said it several times - you have your unique place in the world, in the Universe, and are needed. You have value and you do make change. Think about it with some examples and you'll see it's true.
In another post today, I wrote about the human prisms and the light. By saying 'light', I mean truth, love and enlightenment. Light is for everyone. It's actually easier to allow it to flow through you than to stop it. And it's this stopping that causes suffering.