At the begining of the summer,I was very exiting and relax because I needn't to get up early to go to school and had no homework to do.As we had no see a long time yet ,with some junior high school special good friends in junior high school ,we held a small party,and have a very nice time with each other.Besides,i joined several birthday parties of my classmates.we sang songs ,eat birthcake happily .
But i felt it boring so soon after several day.To make the holiday more meaningful,i made a decision to work at a small supermarket.During my work in the supermarket,i worked hard and sometimes i wanted to give up,but i stick to it finally and i learned a lot .From this experience,I deeply feel my parents' love to me and what i want to say is,thank you and i love u,papa!mama!
因为时间有点赶，所以没怎么修改，你自己斟酌参考吧
因为觉得你给的原文逻辑有些乱，所以我改了下，中文大意如下：
“暑假开始的时候,我觉得很轻松很兴奋，因为早早起床去上学,也没有家庭作业要做。因为我们很久没见面了,我和一些初中特别铁的朋友举行了一个小型聚会,我们都玩的很开心。除此之外,我参加了几个朋友生日聚会，会上我们一起唱歌,，吃蛋糕，很开心。
但是我很快就开始觉得这很无聊。为了使这个假期过得更有意义,我决定在一个小超市打工。在超市工作期间,我很努力的工作,尽管有时觉得很辛苦很想放弃,但我还是坚持到最后。从中我学到了很多东西。通过这次的实践,我深深地体会到了父母对我的爱。我想说,谢谢你们,我爱你们,爸爸!妈妈!
