Tired of fighting.

I know that God has said that his burden is light. But I feel so weighed down. I know he has said not to grow weary. But I am so so tired.
I don't know were to go from here.
I feel like I have to FIGHT for everything in my life.
I have to fight for peace.
I have to fight for my sanity.
I have to fight for my children.
I have to fight for my marriage.
I have to fight for my family.
I have to fight for my relationship with God.
I am so tired of fighting. I don't know where to draw strength from anymore. I try and draw from the Lord. but it drains so quickly. I don't know how to be any stronger. I don't know were to turn from here. I am so alone. I'm losing my grip and I'm scared to fall. Will anyone catch me if I fall? I've always caught everyone else, who will catch me? Or will I fall to my end? GOD!!! Where are you? Please help me!!!! I am so tired. I can't go on like this much longer.
Will someone please catch me. Just reach out a hand and help me, please!!
Where is this strength, this river that will keep me always? Have I wondered away from it, if I have, I am sorry, HOW DO I GET BACK? How do I psh on through this?