What Should I DO?????

at the end i done it... but then is it really good for me?
i duno... mayb i oso did some mistake... n i know more about this...
so should i take initiative to apologize?
i duno... mayb i really easy to be influenced by others...
i have been thinking for this for whole day..
i am nw treated as out group.. from their action i know...
so what should i do??
take action or just leave it like dat??
really hard for me to make decision.....