So many times we listen to the voices or thoughts in our head telling us about all the things that could go wrong, how often do they tell you what could go right. How often does the worse case scenario that you are thinking actually happen? 90% of the time? 60%? I bet in reality it is probably only 2% if that.
Stop worrying unnecessarily and start living by saying "what if the best outcome happens?" "What will I miss out on if I don't do this?" Listen to your fears and analyse the facts not the emotions and you will experience so much more.