Be grateful for where you are now and all of the things you have had to overcome to get to where you are. You have been challenged. You have had failures. These are not important. What is important is how you have reacted to these adversities. What you have learned and the person you have become. You are you because of everything you have been through.
Be grateful for being you because there is countless people who would love to be in the position that you are in. People would go great lengths to live the life you are living. If you want to progress further and go high then you must change. You have already acknowledged the change you had to go through to get to where you are. The next thing is to acknowledge the change you still need to go through to become the person you want to become. You must become the person who earns the things you want.