A "Catch-22" is a paradox where logic faces illogical rules; in high-school employment it reads: "you cannot have a job without experience; you don't get experience until you get a job." The objective on a resume, however, is easily constructed to get that experience: you need strong adjectives, an action verb and the name of the job you are applying for.
You Discover Your Own Objective
The objective on the resume is what you want to do in your career; to this end, you'll need to first consider career options, and sub-options, and remember that these options are for a career, not a job. It's never too early. Even higher education institutions advocate early career planning. This is because there are only a few immediate options for student workers: assistants, interns or lower-end wage workers. Even these, however, are steps to your career objective.
Do What You Love Right Away
Work at McDonald's for a job if you need date money; work there for a career if you are entering the culinary arts. That's pretty much the rule of thumb for anyone going from high school to college to a career: aspire in your objective to do what you love from the earliest point. Some 86 percent of people currently working are unsatisfied with their jobs; you don't want to join them. And now is the time to get online help from LiveCareer, SmartResumeWizard or any number of resume/cover letter services.
The Adjectives to Describe You
Your objective includes anything in your past you can parlay into a career step, introduced by the best adjectives possible; if you can't think of any, they are provided by most online resume services. For instance, if you've raised funds for a club, you're a "skilled marketing professional"; if you know what items your peers buy, you're "well-versed in identifying youth trends"; even if you do nothing but chat online, you're a "Social Media Manager skilled at leveraging the market." You're not lying -- these descriptions are accurate for your activities.
What to Write in an Objective
To write an objective, take any of the phrases above -- most services offer hundreds more -- and begin the sentence with it. Add the action verb and object "seeking position with--" and continue, naming the job in the place of employment you're applying for. Thus: "Social Media manager skilled at leveraging the market seeking position with company X." Follow that simple pattern, and Catch-22 is no longer your employment number.