Bat Mitzvah or Soccer game?

I am a VERY competitive soccer player with LOTs of commitment. I miss almost all of my friend's parties and other events for soccer. I don't have a problem with that since soccer is my pion. However, my bat mitzvah is comming up and I've got two VERY important games up north to play on the same day at the same time (some luck..). It means a lot to her, but i can't let my team down. If i miss the games i have to risk being benched and having my team & coach dissappointed in me. If i miss the bat mitzvah my bestfriend will be furious and all the kids at school will talk about what a jerk i am for missing my friends bat mitzvah. I dont know what to do!