Lose the bad attitude about my job

hmm well i just found that i take it too seriously. It is only a weekend/p[art time job and the money is sufficient. Ive made an agreement with my colleagues that i am willing to swap hrs with them so there is no bad attitude about who has more and why etc.
I have also spoken to my managers and asked for compromises regarding my hrs as when i have too many, i don’t have time to do my schoolwork.
just a little bit of communication always helps