Don't be afraid to say goodbye in your Life when you feel the time is right for it. If you let go off something that is no longer useful for you, you need to know that something will come to replace the old. Something new and refreshing. Something that will be bigger or more valuable.
You've learned the lesson that thing, person or event taught you. What you needed to learn from it. The mission is finished, and you've grown by it. It was useful for you until it served your needs but it's time to let it go.
Saying goodbye is always painful. But this pain is good for you. As you take off its weight from your shoulder, your heart becomes lighter and lighter. As you change your Life, the Life also will change around you by itself and you will see new doors open. Don't be afraid that you make the wrong choice. That you will make mistakes. These mistakes only exist in your head. If you look back years later, you see everything was perfect in the way as it happened.
Don't be afraid to make the first move! It will be painful, I can guarantee that. But this pain won't last forever. I also guarantee that it will be gone by time.