Getting started young with many attachments
Even if you might not see it, you are very lucky to start this journey (Buddhism?) at such a young age. Just having a sense of a direction shapes to some degree the choises you make and the way you approch life situations. 

At this age you might not have control of many decisions that affect you,so becomes even more important what you do with the aspects you can control ( who you spend your free time with, the books you read).

I think it's very important to be kind with yourself. Like you've said, it's a long journey. Try to rejoyce for the smallest progress you make (maybe you're controling your temper for 5 minutes longer than you normally do, maybe you are a little bit kinder to stranger than you were before); don't condamne yourself for the mistakes, just make a mental note to try to do it better the next time.

If you are interested in Buddhism, the precepts are very important guides in our life journey. The important thing is they are trainings, aspects we can continuously work on. So maybe you would like to read more about it.

Then there is the Eight Noble Path, the important training in morality, concentration and wisdom. I found very helpful the book of Lama Surya Das - Awakaning the Buddha within. There are many books on the topic, so just give it a try.

Venerable Yuttadhammo has a series of youtube videos on diffrent aspects of life and meditation. I highly recommand theme.

As one last idea, try to focus on the things you can control, understand that continous insight takes a lot of work and meditate. 
Good luck!