When you're a kid, you always want things to stay the same. 

The same teacher, the same house, the same friends... 

It's one of those things people say: you can't move on until you've let go of the past.

 Letting go is the easy part. It's the moving on that's painful. 

So sometimes we fight it, try and keep things the same. 

Things can't stay the same, though.

 At some point you just have to let go, move on. 

Because no matter how painful it is, it's the only way we grow.