I can think of a couple of other verses about that just off the top of my head. Psalm 121 says I will look to the Lord where my help comes from. And then in Psalm 30:10 is a plea for help Lord, be my helper! It's not that I am so Bible smart - it's just that I've needed lots of help! lol!
I am to the place in this walk that I really do not know how to go on without His help. A caregiver runs on overload all the time. There isn't a "break" actually. Because if you're like me, even if you sit down to enjoy a cup of coffee you feel guilty because surely there's something you need to be doing for your loved one!
He is my strength and I say gladly that I cannot walk through this fire without His help! So today I will rest in Him as I realize that He alone is my help! And He alone can give me strength to stand...and strength to walk through one more day of this journey.