Your imagination is accepted as true so change the bad stuff and make it good and in your victory.(no negatives or fighting).
Learn to empower yourself by learning selfconfidance. There are many different ways of doing this and many different calsses but it starts with you. Never run yourself down or talk about yourself in a negative way. Shine your light for all to see don't hide it under a bushel. Yes it takes time but you will eventually get there and be happier for it. Dont forget the physical exercise or maby a marshial art class for that also builds confidance.
Do whatever you can to empower yourself but most of all dont ever think of yourself as weak or inedaquate for that isnt true. All young people take time to grow into their full power and it is the lessons in life that will make you stronger and wiser in the end.(Yes we all know those that seem confident and strong already but they are the minority). One day many years from now you will look back at this time in your life and smile to yourself. By then you will have a lot more power and confidance than you have now and it will be all the problems of today that will be insignificant and