There is too much emphasis, in this realm, that is placed on certainty. Everyone wants to be sure they are doing the right thing; they want to be sure they are making the right decisions, that they have covered all possible scenarios of outcome. And even once they have used logic, emotion and intuition to its fullest extent, the question still remains, but am I sure?
Here is a better question: Is it worth the risk?
Here is an even better question: Will I survive and be able to cope, if the worst possible outcome occurs?
There are no complications with questions like this, the answer is usually guttural and immediate. You cannot create reasons, excuses or strategies around your bodily knowing of this answer, unless you are skilled at lying to yourself or you are outright delusional. These are yes or no answers, and from there you move.
Many of life’s problems emanate from people asking themselves the wrong questions. Remember, certainty is a gift; risk, on the other hand is an ever-present reality, use it.