Living in Limbo Land

We've hit another bump. Greyson calls me yesterday afternoon to say our realtor called him to let us know that the financing fell through for the people who are buying our house. Everyone is confident (but me) that they will be able to work it out with a new lender. Plus the situation with the new house still isn't resolved. I feel like a crazy person. I'm not in control and it is killing me. I keep surrendering our problems to God and then picking them up and worrying again. Why do we do that? Please pray for my trust to deepen, for peace and that His will be done.