I'm a very pragmatic person, so mostly I tell my daughter to suck it up sunshine, life's not fair. It's pretty much cracking on, taking the rough with the smooth and realising that you don't have to believe in something to understand you just have to get on with it. That's just life...
Think school. - Love it or hate it, an education is necessary to get ahead in life. I hated school, my daughter hates school. I totally understand and I sympathise, but tough luck love, we've all been there, now it's your turn!
That work assigned is important. - It's important because you need a job in order to make money. If you consider the assigment isn't important, your employer is going to get someone else to do it and you'll be out of a job. Every job has it's ups and downs. That's life, just because you don't think it's important doesn't mean it isn't.
That obeying the rules is important. - Rules are almost always there for a good reason, whether you think it's a good reason or not. You don't get to choose which ones you feel you want to obey. Think about the consequences if people decide to only obey the rules they agreed with.
That getting on with you peers is important. - Getting on with your peers makes life easier, it's a good skill to learn as you never know when you might need their assistance with something. If you have alienated people then at some point you'll find yourself alone.