It must be God's will.

When Jonah decided that he would not go to Nineveh but rather go the opposite direction he went down to Joppa and guess what? There was a boat heading to Tarshish. He easily could have seen that as a sign from God. God must have intended him to go because there was the boat, there was opportunity, all he needed to do was pay the fare.
Circumstances can be so misleading. We can see circumstances has being from God when they just as easily could have been placed there as a test. When we choose to disobey God there will be opportunity.