I need to remember this. If you find yourself a bit irritated or overwhelmed, it's a sign that you're spending less time with GOD and more time with this world. Through God's eyes. Spend time with Him!
Make sure that God is the one who shut the door. If God really did shut the door then stop banging on it. Otherwise, Matt 7 "Ask and it will be given to you; seek and you will find; knock and the door will be opened to you.