Think about it!

Isn't God an awesome God? He has done so many things for us, he sent his only son to die for us. He has done so many miracles for us to see the world as it is today. You owe it to him to be happy and when you are happy you are glorifying him. Don't feel sad anymore, hasn't your God done a lot for you? Won't he do even more and even better for you in the future? It's up to you whether your life is positive or negative, you have the power to change your world.
Your life is a reflection of who you are inside. Is it that there is something you have to change about yourself for you to be able to see the world with a more optimistic frame of mind? Sometimes we must evaluate ourselves because God deserves the most faithful and immaculate followers and although we're not he accepts us anyway. 
Can't we make a small change in ourselves so God can look down on us and smile and say, "Yes he/she is my faithful follower, he/she has the faith to move mountains, finally I can make some positive changes in his/her life."
Friends, God gave us more power than we could ever know or understand and it all starts with your thoughts.