Then, stop the self-doubt cycle! Here's how to trust your gut and get out of your own way. These tips come from Arthur Freeman, co-author of The 10 Dumbest Mistakes Smart People Make and How to Avoid Them: First, there is no "right" decision. When you hear yourself saying things like "If only we'd chosen the other car," it's a sign you're seeking perfection, which doesn't exist. Bottom line: There are very few situations where there's only one choice, which means you have to live with some uncertainty. Then, turn your doubts into action. For example, if you find yourself thinking "Why did I take on this job, I'll never be able to handle it!" It just means you're afraid you can't succeed. So, accept the fact that you're afraid, and ask yourself "What's the first step I can take to get this started?" Breaking things down into manageable chunks moves you away from worrying into problem-solving. And the final stop-the-second-guessing tip: Cut yourself some slack. If an old decision keeps nagging at you, remind yourself that you have more information today than you did at the time. And realize that you learned a valuable lesson. You won't make the same mistake twice. And before you second-guess your next decision, know this: The first decision you make is almost always the right one. Studies show that when people go back and change their minds, they regret their decisions more often than people who just go with their gut instinct. If you'd like to go further, the book is The 10 Dumbest Mistakes Smart People Make and How to Avoid Them by Arthur Freeman.