The good news is...........you cannot make the wrong decision. There is a theory that you are always make the best decision given your knowledge which is never perfect. You cannot predict the outcome, you cannot foresee the future (there will be too many variables involved of which you know nothing). If you are not happy with the consequences, then you correct your course.
Just like an airplane. It does not travel from Point A to Point B on a straight line. It veers off course, comes back, veers off course in the other direction, adjusts, veers off course... So the airplane arrives on the right spot at the right time "being off course (in error) for 90% of the time."
You always have to remember when you make a decision you can travel only one path, but not both A and B, therefore you only know the consequences of the decision you made, but not the forgone scenario (the other branches of the decision - become speculations - what if, what if, what if.... Calm down, there is no WHAT IF. You will make a right decision - always, just don't forget - TO CORRECT YOUR COURSE.
Take anything for example - "to post or not to post this question on HubPages".
1) not to post - more time for yourself, no need to read answers, possibility to ask something else. Possibility forgone for Decision #2.
2) to post - you got some responses and ... (fill in the blank)
What was the right decision and how do you know whether you made the right decision?