Can Living in a Small Space on Earth Prepare You for Living in Space?

Could you live in a self-contained space that must supply food, water, and protection from a hostile environment for days and weeks at a time?  Some people have done this on sea, others on land.  Can these experiences help us survive in space or on another planet?  How can off-earth living spaces be engineered based on what we learn from building and living in small spaces here?