I studied poker a lot in high school, and it still influences how I think today.

Probabilistic thinking about the EV of your decisions is a good framework, but "Just keep making good decisions" is the hard part. Same as in poker, though, the hard part about making a decision in life isn't the middle-school level probability math, but about making the right estimates about payoff potential and success rate based on incomplete information.

Analyzing things as they are rather than how you wish they were, being able to separate useful information from noise, and taking a step back to look at second-order effects are all useful skills that will help you make better decisions the more you develop them.