I am sure that you have heard people who determine what God's will for their life is by which doors open for them. If it's and open door they feel like they must go through it because obviously it is God's will for their life. They may even quote scripture like Revelation 3:7
"These are the words of him who is holy and true, who holds the key of David. What he opens no one can shut, and what he shuts no one can open." To quote this about God's will for your life is a prime example of proof texting without context. And context is very important in determining the will of God. The reason some folks live such erratic life is that they go through every open door. To use another cliche though I think instead of looking for open doors we should determine that in the words of the old hymn, "where He leads I'll follow."
I can't be real specific in my example although I am experiencing it at the moment because if you don't want everyone to know everything you can't really say it on a blog. But there is situation where I have told my wife several times, "if that door ever opens I will go through and see what happens." Well the door opened recently and even though it has been on my mind a lot lately I am pretty sure that God doesn't want me to go through that particular door. I am not sure that I am doing anything more than rambling here but I will try to sum this up to make my point. Instead of trying every door and going through the one that is open I need to remember what God has said to me in the past and unless He has said something different I should just go with the last thing I heard from Him on the subject.
That open door is tempting but if I allow it to distract me then I could lose sight of where I am going. Don't just look for vague omens and signs, really seek to know God's will for your life. And then don't settle for anything less.