I think I'm thinking too much

Two more years until I head off to college and begin the journey.  I keep thinking about it and I know i should enjoy being young, but I can't help but look back and then look at me now.  Time has gone by so fast and everything has changed, inside and out.  I'm so worried that I might now be able to get accepted to college, it's my dreams and I love to learn.  People tell me all the time that I will do something big and design big things, but I my heart is unsure right now.  I want to be confident but if you look at all these designers, they are absolutely amazing.  There are so many types of fabrics, texture, color, style, but it seems so hard and overwhelming.  Am I loosing hope?  Why am I so unsure?  I feel like something is missing in my life, but I just don't seem to get it.  Will Father help me?  Time is going by so fast and I need to look at reality instead of dreaming, but I just don't know where to start.  Can someone help me?