Let go

In counseling, a counselor will advice a couselee to 'let thing go'. What is the thing? It could be an incident, a person, or a thing. No matter what it is, as long as the couselee hold tight with this thing, it will hinder the couselee to move on his life. There are different reasons for a person not letting 'it' go, but none of it would help the person feels better for his choice because he really feels he is holding back his life.
I know that I have to learn the 'let go' lesson as I believe that my life is stucked from not letting things go. I hold the 'thing' tight because I'm afraid of losing it which will make myself not complete. It's hard to 'let go' because I'm not sure what will happen after that. However, I realize that the only way I can be complete is letting God to be my centre. The only one who plans my life is God. Therefore, I pray that God will give me strength and persistance to 'let things go' and let Him show me his plan to me, then I can move on my life and my life will be completed.