It is important to understand that thinking takes energy. In order to think in an effective way requires work and effort on your part. It is not something that just happens.
That is why we make bad decisions, we are too lazy to expend the energy required to make a good decision.
When making an important decision, be aware of the energy that you are expending. If you are expending an amount of energy appropriate for the decision, you need to determine where you are being lazy. Expending the energy required results in better decisions, which results in better outcomes.