Forget Regret - There's not a person on this planet who hasn't done things they regret; however, it's the successful ones who move past their mistakes. The mistakes you have made in the past don't define you - your actions from today forward will. "It's NEVER too late to become the person you might have been."
Learn from Failure - One of the most profound things I ever read was this: "Regret is an emotion - it is a feeling of disappointment along with a modest amount of shame or guilt. To learn from failure, we have to move past our emotions and figure out what went wrong."
Ask for Help - You are not alone. It may feel that way sometimes, but there are many people who would extend their hand and lift you up if asked. All you have to do is ask. "You are surrounded by people who genuinely want to help you - and if you are not, THAT is your problem."
Take 100% Responsibility - Except in rare and unfortunate circumstances, YOU are entirely responsible for the quality and condition of your life. Your career, your relationships and your happiness are all under your direct control. "Take control of your destiny or everyone else will."
Have Courage - How badly do you want your goals? When you get hit hard, you have an opportunity to answer this question. It's one thing to say you want to do something, or to be something. But to walk get up and keep moving forward knowing there may be more pain ahead is a test of your determination and resolve. "Courage doesn't always roar. Sometimes, it is the quiet voice at the end of the day saying, "I will try again tomorrow."