[stevenameyer]

As a fellow young professional, in my opinion the only way to improve decision making is to increase the amount of information and experience that you have to draw from to make the decision. This can be first hand information and experience or second hand.

So work on gathering information before making a decision, surround yourself with people with more experience and/or different areas of expertise and take every opportunity to try and absorb their second hand experience that you can, and finally make decisions and learn from them. The more you have to draw from the more likely that you will be able to make the best decision.