What if we're not doing anything wrong? What if precisely where we are, who we are, what we're doing, and how were struggling is where God wants us to be? And what if, quickly and easily, God will lift our burden when He decides it's time?
But I think Judas and Peter had similar hearts, fallible human hearts like ours. I think the same doubts that plagued Peter were the same doubts that prevented Judas from coming back to Jesus and the other disciples. I think the same faith that caused Judas to return the money in repentance was the same faith that propelled Peter to weep bitterly and then wait in hope with the other disciples.