"When you realize you want to spend the rest of your life with somebody, you want the rest of your life to start as soon as possible." - When Harry Met Sally the rest of my life is getting ready to start
There's no point in consistently worrying about everything. What will happen will happen regardless. So breath, look on the bright side. Have some laughs, fall in love, accept what you can't change, and carry on. To actually live is courageous.
The secret of being happy is accepting where you are in life and making the most out of everyday. But the secret to success is not accepting where you are and is making a change to strive for something better.