Make peace with your past!
Our background and circumstances may have influenced who we are, but we are responsible for who we become. If you did something in your past that you wish you hadn't done, start thinking of the reason why did it happen, what pushed you to that choice, what have you done since then to change it. Have you done enough? Can you now, find peace within yourself? Have you pushed yourself entirely to forgiveness? If no, then devote yourself completely to change that.
Clean up your messes!
Start realizing what have you done wrong. Take baby steps on the way to change them in positive things. Fill those empty spaces that torment you every now and then. Remember that nothing changes entirely in 5 minutes because the universe takes time.
Be here now!
Keep your feet on the ground and your thoughts at lofty heights! Always be in touch with what happens around you. That's the universe giving you signs on how well things will turn out for you!
Stand up for what you believe!
What is that thing that you want to spend your life doing it? If you haven't found it yet then start exploring! Grab it, embrace the idea of how fun or inspiring it will be to do it! There will be many people who will try to put you down and kill your beliefs but you HAVE TO show them you're not a weak person, nor a looser, and that you will fight for your ideas until you make them happen!
Feel the fear and do it anyway!
The fear will always be there. In fact, as high as your success is that's how high your fear will also be. But you have to do it anyway! You have to let it go! You have to fight for your beliefs! Don't let it define you because you've not come to this planet to have fear! You're here to be free and live you life to the fullest!
Don't compare your life to others!
Yes, the grass might be greener on the other side but remember that everyone is fighting a hard battle. You might think that you're the only one fighting but you're not. Everybody has their personal demons to face, their own struggles, so you don't know what they are dealing with. That's why you should never compare.
Give thanks! As many as possible! Aristotle once sad that we are what we repeatedly do. Excellence then, is not an act, but a habit! So start practicing gratitude now and then. Soon you'll be full of joy,inspiration and enthusiasm to continually find new things to do in life.