It's one of those things that people say, you can't move on until you 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.
You can seek the advice of others, surround yourself with trusted advisors. But in the end, the decision is always yours and yours alone. And when it's time to act and you're all alone with your back against the wall, the only voice that matters is the one in your head. The one telling you what you already knew. The one that's almost always right.