How to get along with my sister?

We have the same situation. My brother and I have a 7 year gap between us. He is the youngest and we fought a lot before when he was around 6 and I was in high school. I was young back then so I was not really aware that I was being immature in the way I was handling him and our situation. It’s just a matter of understanding and caring for your little sister. I know it’s hard but just try. The reason why you fight a lot is because of the age gap. Your thinking is different from hers. She is obviously young to understand the world and everything. You’re her big sister and unknown to you, she looks up to you. She just needs someone to guide her and understand her. I know high school can be very stressful and all but it pays to know that when you go home, you’ll have a peace of mind and a little sister who loves you. So widen your horizon and put more patience. Gain respect from her by respecting her too. I hope this help. Goodluck