Hi there. Don't we all feel like this? I have a man who takes care of me when I need it and I take care of him when he needs it, which seems to be a lot less than me. We have a standard thing when it all seems too big and too difficult which goes as follows;
Me, wrapping myself in his arms "Tell me."
Him, holding on tighter "It/We will be okay... I promise." This always works for me as I then know he's thinkinng on the problem too and it takes the pressure off me a little and I know together we will come up with a solution.
I also have a 3 year old who is very caring and nurturing to both of us so I guess in my team we all take what we need and give everything we can. Although I do fear getting old and him going before me and who will wrap me up and tell me and could I survive alone, I try to push it out or it consumes me.
After all that I go back to my first thought which was, you are not alone in this feeling.