It hurts, it hurts really bad when your past decisions turn out to be the biggest and stupidest mistakes you have ever made. But still, for some reason, it's not easy to get over them because your heart refuses to believe the bitter truth. It's like you wish someone would just lie to you and say that it's not what it looks like for you to believe it.
But the worst part is that you stop trusting yourself because you feel if you would open up your heart again and follow what it says or make a decision, then it would turn out to be a horrible one.