Not exactly. Develop an accurate risk/benefit analysis that you use to make decisions better. It's something most people never do because humans are notoriously bad at risk/benefit analysis.

So, how do you get better? Well... At the risk of taking this thread too far off topic, learn the scientific method and try to understand your own thoughts and feelings, strengths and weaknesses, and observe the world around you. Learn from your own mistakes and the mistakes of others, hopefully as objectively as a single human can.