A different feeling you can say when it is your first job. I remember my sister when she got to work the first day in her first job,  her smiles speak the excitement after a long wait of landing a decent job.

Maybe some felt nervous but other people's exictement  filled the day with much much happiness.

This is the reason why almost all of us need a job because it gives us different benefit if we think about finances. We don't want to be always dependent to our parents because time will come that we have to stand on our own to be more independent even when it is your first job that this wil teach you what to do, your financial responsibilities, personal growth and maturity.

In your first job, this is your chance to show your abilities because you have no choice and giving importance to attendance like quality is your responsibility. Don't be scared or culture shock of what will happen in your first day of your first job. Just be ready and show your best ability.For example, you don't like your job now but don't be a loser instead make the best that will guide you in achieving your goal. 

Remeber that your first job plays a very important role in achieving your goals....so give your best shot...gud luck!