The second support system is internal - you. You can be your own best friend or your worst enemy, depending on the messages you give yourself. Identify what you can do instead of dwelling on what isn't possible. Think about building on your strengths and improving your weaknesses. Focus on the good times, not the bad ones.
Transitions are never easy - even the good ones.
It's human nature to resist change and feel stress when the future is uncertain. Many people in transition find themselves fearful - of failure, of success, of rejection, of embarrassment. The important thing is to keep moving ahead.