You have to think things through while making some important decisions. You have to weigh the pros and cons of the situation. If you make hasty decisions you may end up regretting. It is a cognitive process leading to a course of action among various options. You should move fast on the reversible decisions and slow on the non-reversible ones. Choosing the wrong alternative at the right time is not better than choosing a right alternative at the wrong time, hence make the decision while you still have the time.