Making smart calls in forex? Stick to your strategy, stay cool when it gets stormy, and always, always use risk management. Oh, and don't forget to learn from your wins and losses!
You can sharpen your knowledge for better decision-making through many forex academies such as Forex School by BabyPips, Forex Academy by Prime Codex, or IG Academy. But, I usually learn through BabyPips and Prime Codex.