Live for the day. Find comfort and joy in all things, big and small. Never allow yourself to be stepped on, stepped over, or put down. Big changes are only as big as you make them. This could be the most stressful, nerve wracking, difficult period of your young life, or it could be the best. Opportunities await you. You have closed a few doors, but so many more have opened.
Allow my cliches and fortune cookie lines to aid and inspire you as you quest through life. Good luck.